thread locking and sealing insulating coating · •no metering problems of the type encountered...

… technologies for a reliable hold

Threadlocking and

sealing

Insulatingcoating

TufLok®/Nytemp®Nyseal®Nystay®Nyplas®Nycote®

precote Top 300®precote/3M

Technical publication

No.60

Kerb-Konus-Vertriebs-GmbHWernher-von-Braun-Straße 7 Gewerbegebiet Nord92224 Amberg

Phone +49 9621 679-0 Fax +49 9621 679444e-mail [email protected]

Internet www.kerbkonus.de

Fastening technology from KerbKonus is in successful applicationin a wide variety of different industrial sectors around the world.

State-of-the-art production facilities provide our customers withthe assurance of quality and reliable delivery, and sophisticatedfastening solutions for every conceivable field of application areimplemented by our own Research and Development Department.

Close cooperation and exchange of experience and expertise onan international level ensure that our company stays at the cutting edge of technological development.

With independent branches and agencies operating in a numberof countries around the world, we are a truly reliable partnerwhen it comes to secure fastening technology you can rely on.

... our products and services

Alongside its renowned threaded inserts, the name KerbKonus also stands for comprehensive products and services in the fieldof connecting technology. KerbKonus offers its services as a reliable contract coater to prepare threads for a wide range ofdifferent requirements:

• Thread locking• Thread sealing• Insulating plastic coating

Threaded inserts from KerbKonus have been thoroughly tried andtested over the years and used in a wide variety of applications tocreate connections you can rely on. Depending on the method ofanchoring in the material, KerbKonus offers a variety of differentthreaded insert versions:

• Self-tapping threaded inserts for metal, wood and plastics,• Threaded inserts for cold embedding• Threaded inserts for hot or ultrasound embedding• Threaded inserts for screwing into an internal thread• Threaded inserts for riveting

For the reliable, cost-effective connection of thin mouldings andparts made of aluminium and magnesium, KerbKonus offers the:

• Tuk-Rivet, the complete punched rivet system for thin mouldings

If you have a specific problem related to the field of fasteningtechnology – with its rich fund of expertise and comprehensiveproduct range, KerbKonus has the solution for you.

Technical details on KerbKonus products are also provided on ourhomepage: www.kerbkonus.de

To access design data, go to the download portal of our website.Here, you will be able to download product data in any required formats or as CAD files..

Thread coating ...

Tested quality and reliability Page 2 and 3Coatings in application and on the test stand Page 4 and 5

Screws: Up to 120°C, short 360°- Works Standard Page 6 to 9M0,8 to M68 term up to 150°C, coating 900/945Nuts: nylon spot coating,M5 to M20 Colour: blue

Screws: Up to 200°C, plastic 360°- Works Standard Page 6 to 9M0,8 bis M68 spot coating coating 900/945Nuts: Colour: orangeM5 to M12

M3 to M20 Colour: green or 360°- Works Standard Page 10 and 11ISO 4 to ISO 10 transparent plastic 903 2

from Ø 3 mm Colour: green, Works Standard Page 12 and 13fixing, 903 4Polyolefin foam

Screws Colour: black 360°- Works Standard Page 14 and 15from M3 PVC/Plastisol- coating 903 3

coating

Screws antifriction 360°- Works Standard Page 24 to 25M3 to M20 Colour: yellowish coating 930

M5 to M16 Insulating No Works Standard Page 16 to 19coating 911/912/913

from M2 Film-forming 360°- Works Standard Page 22 to 23dispersion coating 924 to 927Colour: white

from M2 Up to 170°C, 360°- Works Standard Page 20 to 21plastic adhesive coating 924/926/927in microcapsulesColour: yellow, red, turquoise

from M2 Short term up to 360°- Works Standard Page 20 to 21150°C - 3M 2510 coating 924 to 929plastic adhesivein microcapsulesColour: blue, orange

Screws/bolts up to 850°C 360°- Works Standard Page 26coating 926...4/927...4

Screws/bolts up to 100°C 360°- Works Standard Page 27150°C coating 926...1/927...1

Dimen

sions

Field

of ap

plica

tion

Seali

ng m

etho

d

Spec

ifica

tions

Furth

er

descr

iption

Thread coating from KerbKonus …

TufLok® „der blaue Fleck“® (the blue patch)

Nytemp®

Nyseal®

Nystay®

Nyplas®

precote Top 300®/OKS 1765

Nycote®

precote 5/15

precote 30/80/85

3M 2353/3M 2510

precote 709

precote 10-1

60.1018

2 60.1018

At our parent plant in Amberg, weproduce threaded inserts using efficientproduction methods. A team of quali-fied and highly motivated staff guaran-tees a consistent, high standard ofproduction.

The number of products manufacturedover the company’s history reachesinto the billions. State-of-the-art auto-mation lines manufacture around theclock in a precise and high standard ofquality. The efficient and low-cost pro-duction of large-scale product series isone of the strengths on which we havebased our success.

But our high-volume production outputin no way compromises flexibility. Weare able to quickly and efficiently pro-duce even small batches of non-stan-dard items.

Our well assorted inventory permitsthe reliable, prompt delivery of standardproducts, keeping your productionrunning to schedule at all times andhelping to minimize your warehousingcosts.

We are particularly proud of a cost-toperformance ratio which ensuressatisfied customers the world over.This has made KerbKonus a reputableandmrespected partner to industry inthe global marketplace.

Quality and environment are toppriority issues at KerbKonus. Qualityconsciousness is a continuous threadrunning through every aspect of thecompany's work and all its productsand services. Qua lity is lived and brea-thed at KerbKonus.

As manufacturer in the metalprocessing industry we are awareof our responsibility for an environmen-tally compatible production.With this in mind we follow up a policyof sensible resource spending andenvironmental-friendly productionboth in our process engingeering andour product range..

What really counts:tested quality.

Quality SystemDEKRA Certificat in accordance withISO 9001:2015 Reg.No. 30507428

ISO 14001:2015 Reg.No. 170507049

ISO 50001:2011 Reg.No. 181115119

... technologies for a reliable hold

360.1018

KerbKonus has enjoyed an excellentreputation as a surface treatment com-pany over a period of many years.

Thread coating is something we viewas a comprehensive service. Subjectareas such as reliable delivery datesand flexibility mean more toKerbKonus than mere watchwords;they form the basis for maximumcustomer satisfaction.

We carry out surface treatment at anumber of locations (two of them inGermany), meaning that we arealways within reaching distance forour customers. Short distances andproduction flexibility guarantee ourcustomers the degree of delivery relia-bility they need to succeed.

Our flexibility is evidenced particularlyby our ability to respond quickly tocustomer requests. We take charge ofthe entire logistical organization. Andwhen the situation so requires, we actquickly and reliably to maintain thedelivery capability of our customers –no matter how tight the bottleneck.

Our many years of experience as asupplier to the automotive industryhave clearly highlighted the need forall-embracing solutions to connectionproblems which cut across conventionalthematic boundaries.

With its know-how and its comprehen-sive range of products and services,KerbKonus is a truly dependable part-nerwhen it comes to „fastening techno-logy you can rely on“.

A secure connectionfor our customers …

4 60.1018

Coatingsin application …

TufLok® – „der blaue Fleck”(the blue patch) or as an allroundcoating

A reliable economic system for lockingand sealing screw connections. A highlyelastic, wear-resistant blue nylon coatingis applied to part of the thread on screwsand other threaded components.

• Security against working loose orunscrewing

• Provision of a fluid or gas-tight seal

• Use in materials of any optionalstrength or surface hardness

• No damage to surfaces as is possiblewith many washer elements orwith toothed-head screws

• No notching effect under the head,eliminating the risk of permanentfractures in thin-walled mouldings

• No metering problems of the typeencountered with fluid screwlocking media

• No components becoming stuck onassembly belts

Thread coating types Tuf-Lok®, Nytemp®,Nyseal®, Nyplas®, Nystay®, Top 300®, Nycote®, precote and 3M have been proven in practical application the worldover.

KerbKonus offers a contract surfacetreatment service using these coatingmethods on supplied screws and nuts.

Der TufLok®-spot creates a high frictio-nal engagement during the installationprocess, firmly pressing together theflanks between the screw and nutthread.At the same time, it fills the axial back -lash between the screw and nut thread,creating a connection which preventsthe screw from working loose under dynamic loads.

Nytemp®

High-temperature screw locking andsealing system for use at continuoustemperature stress of up to 200°C(higher temperature stress also possiblefor short periods).Due to the high coating temperature,this product can only be used onbright or phosphated threaded compo-nents. Short term corrosion protectionmay be applied subsequently.

Nyseal®

Nyseal® is a new concept, involving theapplication of elastic seals on screwsand other threaded components priorto application, either directly under thehead, flange or on the thread run-out.This eliminates the need for the use ofmanually applied washers, seals orO-rings.

Nystay®

Nystay® is a precoating made of plasticwhich is applied directly on the shankof the connecting elements to securethen during transport or installation inthe relevant application or assembly.

Nyplas®

Nyplas® is a new concept which permitsapplication of the sealing materialplastisol/PVC directly under the head,flange or runout threads or screws orother threaded elements using a precoating technique.This eliminates the need for manuallymounted washers, sealing rings etc.

Nycote®

Nycote® is a patent-protected coatingmethod involving the application ofinsulating (non-conductive) Teflonpowder on the heated threaded com-ponent.

Result: A protective layer which pre-vents unwanted deposits from primers,paints and other surfaces during theelectrodeposition process.

precote Top 300®

percote Top 300® is a wax-basedcoating which provides a dry touch-proof gliding film. precote Top 300®

is the ideal product wherever a lower coefficient of friction or reducedfriction spread are required. It can alsobe used to reduce the installation resistance of self-tapping or trilobularscrews.

precote/3M®

The principle goes by the name ofmicroencapsulation: Minute fluid drop-lets trapped in a thin-walled capsule.This method allows fluid adhesive lok-king systems to be „packaged“ inpowder form.

The powder-form microcapsules areworked into a reactive binder systemand applied in this form to the threadsurfaces. The threaded components arecoated by mechanical droplet wettingusing special coating plants.

During installation of the threadedcomponents, the microcapsules breakopen, releasing the fluid adhesive lok-king medium, which dries quickly.

Product characteristics

5


60.1018

On the test stand …

A company’s success depends primarilyon its productivity and innovativedrive as well as on the quality of itsservices.

A high standard of quality is fundamen-tal to any company’s long-termsuccess in the marketplace.

Quality improvement and enhancedproductivity are not self-contradictory.Quite the contrary: Where an efficient,functioning Quality System is in place,they serve to complement each other.

For this reason, KerbKonus has inves -ted heavily also in developing and ex -panding a system of internal productionsurveillance in its thread coatingproducing division.

Threaded inserts from KerbKonus aremanufactured in large piece numbers.Human lives and safety can oftendepend upon these tiny components,for instance in the case of airbagretaining fasteners.

Because we bear this heavy responsibi-lity, our products are tested andmonitored in line with the most strin-gent directives. In the case of particu-larly critical applications, each andevery part is exhaustively tested onstate-of-the-art test equipment beforeit is delivered to you.

6 60.1018

TufLok®/Nytemp®for self-lockingexternal threads ...

Field of application

Product features Installation

Coating

• TufLok®: Temperature resistantfrom -56° to +120°C. Followingprior practical testing, applicationsup to +150°C are possible.

• Nytemp®: For high-temperaturescrew locking for continuous thermalstress of up to 200°C (higher thermalstress also possible for short periods).

• TufLok®: Does not dry out, shrinkor decompose, has a practically unli -mited storage life. Resistant to alco-hol, oil, petrol and most thinners.

The TufLok®-coating is also suitablefor use in the food industry.

TufLok® „der blaue Fleck“ (the blue patch) has proven highlysuccessful in practical applicationsaround the globe: In the automotiveengineering industry, in heavy-dutymachinery, fittings and appliance con-struction, in hydraulic systems, electricaland precision mechanics and in optical applications.

The TufLok®-spot is also suitable for usewherever other systems are unable tomeet requirements for technical oreconomic reasons:• For extremely small screws – from M 0,8• For screws made of hard materials• For screws whose cross-section must

not be weakened• For threaded bolts

• Excellent locking effect compared toother methods; even if screws are not correctly tightened.

• Vibration-resistant in every screw-inposition. This makes the TufLok® screwideally suited as an adjusting screw.

• Fluid and gas-tight seal. The nylonlayer presses firmly into the flanks ofthe thread, so preventing the ingressof media. All-round coating isrecom mended for these applications.

• Replaces positive locking elementswhich are often forgotten and lostduring assembly. The blue TufLok®

dot is an integral part of the screw and cannot be lost.

• Multiple use. The highly elastic blueTufLok® spot always endeavours toregain its original shape. Its systemtypical spray edge area safeguardsthe contact surface from shearing off.

• No drying time whatsoever required– immediately capable of withstanding stress. No problems also whentightening the TufLok® screw duringfinal installation.

• Suitable for all metallic materials,also for threaded components madeof stainless steels, light alloys andbrass, as well as for almost all surface-treated parts.

Coating takes place in accordancewith works standard 900.1.

It is also possible for galvanizedscrews to be chromated after TufLok®

coating; The concentration of nitricacid for activation of the zinc coatmay not exceed five percent, it shouldalways be kept as low as possible.

Optimum results are achieved with aclean, smooth and chip-free nut threadin the medium tolerance category. Wegenerally recommend countersinkingthe female thread.

The TufLok® system can be usedwithout problems in running productionseries without any need for toolmodification.

Most special requirements relating tothe position of the coating and the de -gree of torque can be accommodated.

TufLok® screws are mounted either me-chanically or manually using conven-tional tools.The TufLok® screw enhances producti-vity due to its capacity for fully automa-tic feed and installation. The femalethread does not need to be free of oilor grease, so allowing torque levels tobe decreased.

Testing

Testing generally takes place in accor-dance with WS 900.1.

Other test methods must always bespecified, and can include:

• DIN 267, part 28• Customer test specimen with torque

specification

B1 B2

A

α

Kerb-Konus-Vertriebs-GmbH • P.O. Box 1663 • 92206 Amberg • Phone +49 9621 679-0 • Fax +49 9621 679444


760.1018

Thread coating with nylonClamping coating

in accordance with DIN 267, Part 28

TufLok®/Nytemp®

Works Standard 900.1

Application

For the manufacture of ready-toas-semble, self-locking and sealingscrews and threaded parts fromM 0,8 to M 68.

Torque levels according to Works Standard

Torque testing

1. Torque testing should be carried out using properly calibrated gauges

2. Turn the screw into the test nut until the coating is positioned within the nut, measuring the maximum screw-in torque (max. values, seetable, column I).

3. Back the screw out 90°, then measure the greatest torque during the following 360° (for target value, see table, column II).

4. Back the screw out completely from the test nut four times and then screw back in again. During the fifth unscrewing process, once againmeasure the greatest torque level during the first 360° (for target value, see table, column III).

The values specified in the table assume the use of screws whose material and surface quality are homogenous. Tightening torque levelsduring testing under pretension: see specifications of the screw manufacturer.

Special versions

Deviating coating lengths, spot or all-round coating and/or other coating positions. Deviating torque levels and values for different testmethods (nut corresponding to DIN 267, part 28) or other screw dimensions respectivley tolerances: Test coating required.

Alongside the standard colours blue for TufLok® and orange for Nytemp®, other colours can be supplied on request for purposes of differentiation (e.g. inch/metric, different strength classes and for identifying small dimensions, for example M1/M1,2).

Normal coating:

Coating angle � in the screw bodyarea ≈ 90°, edge zone (spraytran sition) up to ≈ 180°. Coatinglength B1 ≈ 4 to 6 thread turns.Around 2 to 3 thread turns remainuncoated to ensure flawlessinstallation (B2).

Torquemeter

Test nut:Bright steel,hardened

Speed max.10 min-1

TufLok®

screw

Countersink 90° - 120°,Ø ≈ 1,05 A

ISO 6H or UNC/UNF: 2B

10xthread pitch

ScrewsISO 6g

A

M 2M 3M 3,5M 4M 5M 6M 8M 10M 12M 14M 16M 18M 20M 22M 24

0,20,450,70,91,6369,5

13192836446080

0,040,10,20,280,40,81,52,33,44,579

111520

0,020,050,10,170,230,40,81,21,72,33,545,57,5

10

Iscrewing in

max. Nm

IIFirst unscrewing

min. Nm

IIIFifth unscrewing

min. Nm

Animation

8

TufLok®/Nytemp®for self lockinginternal threads ...

Self-locking internal threads are coatedwith a highly elastic nylon layer,TufLok® –„der blaue Fleck“ (the blue patch).

When screwing on the internal thread,this blue TufLok® spot brings about ahigh level of surface pressure againstthe flanks of the mating thread.

The nylon layer also fills out the axialbacklash between the threads of thescrew and nut, producing a vibration-proof connection which prevents thethread from working loose underdynamic stress, but can be released atany time.

Self-locking TufLok® internal threadshave proven highly successful throug-hout every branch of industry, forexample in automotive engineering,and in all types of constructions andappliances – particularly where thereis a danger of parts working loosefrom machines or vehicles in operation.

• The TufLok® internal thread coatingbrings about a high degree oflocking safety.

• The self-locking TufLok® nut can bequickly and simply installed, eithermanually or using fully automaticscrewing devices. It is ideal for pre -cise setting work.

• In contrast to lock nuts with deformedthreads or toothing, theTufLok®

nut prevents any surface damage tothe workpiece, thread erosion, aswell as abrasion or damage to thescrew thread.

• Additional locking elements can bedispensed with, meaning cost sav -ings due to lower outlay for storage,scheduling and inventory man age -ment.

• The „built-in locking effect“ cannever be left out accidentally duringinstallation or be lost during repairs– meaning added security..

• TheTufLok® internal thread is reusable.

• TufLok®: Temperature resistant from -56°C to +120°C. Followingprior practical testing, applicationsup to +150°C are possible.

• Nytemp®: For higher continuousthermal stress of up to 200°C(high er stress levels possible forshort periods).


Product features

60.1018



9

Standard coating

- patch coating- 360° all round- Coating to thread centre (spray tran-

sition at the thread start and end)

Application

For screw fastenings which areboth vibration-resistant and capa-ble of release at any time.

Threadnut

Clamping torque

First screwingon max.

Firstunscrewing

min.

Fifthunscrewing

min.A

Thread coating with nylonClamping coating

similarly DIN EN ISO 2320

TufLok®/Nytemp®

Works Standard 945

Dimensions in mmTorque values according to Works Standard

Suitable for all metallic materials, also for threaded parts made of stainless steel, light alloys and brass as well as for almost all surface-treated parts.

Torque testing

1. A KKV test bolt is used for testing.

2. Screw the KKV test bolt into the component under test until the coating is completely covered.The test bolt may project beyond the coating by no more than 1 – 2 turns. When turning, measure the maximum screw-in torque (see factory standard table).

3. Screw the test bolt back out by 90°, then during the following 360° measure the greatest screw-out torque (for target values, see the factory standard table).

4. Screw the bolt out of the component under test four times and screw back in. During the fifth screw-out process, measure the greatest torque again during the first 360° turn (target values in accordance with the factory standard table).

The values shown in the table require nuts which are homogenous in terms of material and surface quality.For the tightening torque during testing under pre-tension: see specifications of the nut manufacturer.

Thread as per DIN 13

Resistance See TufLok®-Works Standard 900.1

Locking similarly DIN EN ISO 2320

Other dimensions and special coatings (torque levels) on request.

Special versions Deviating coating lengths, spot or all-round coating and/or other coating positions. Deviating torque levels and values for different test methods (similarly DIN EN ISO 2320) or other nut tolerances: Test coating required.

Alongside the standard colours blue for TufLok® and orange for Nytemp®, other colours can be supplied on request for purposes of differentiation (e.g. inch/metric, different strength classes and for identifying.

M 5M 6M 8M 10M 12M 14M 16

1,636

10,515,52432

0,290,450,851,52,33,14,5

0,20,30,611,62,33

Torquemeasuringdevice

KKV test bolt tolerance 6g

Speed max.10 min-1

Componentunder test

60.1018

10 60.1018

Nyseal® – under-headpre-coating for sealingheaded screws ...

Nyseal® is a new concept permittingelastic seals to be applied under thehead, flange or at the thread run-outof screws or other threaded compo-nents – already prior to installation.

This eliminates the need to usemanually mounted washers, seals orO-rings.

Nyseal® is a green, optionally transpa-rent plastic coating which is melteddirectly onto the underneath of thescrew head. This achieves an excellentsealing effect against fluids and gases.At the same time, the coating acts asa buffer for sensitive surfaces of theworkpieces to be joined.


• Low-cost pre-coating

• Prevention of corrosion under the screw head

• Excellent sealing properties

• No additional washers or sealsneeded

• Workplaces and assembly workstations are kept clean

• No waste

Product features

1160.1018 Kerb-Konus-Vertriebs-GmbH • P.O. Box 1663 • 92206 Amberg • Phone +49 9621 679-0 • Fax +49 9621 679444


1) Guideline values

On principle, before application of the Nyseal® coating, a practical test must be carried out using samplesin order to check the tightening torques and also any possible reusability in the application.

Example for finding Nyseal®-coating in accordance with WS 903 2 on an M10 screw:the article number 903 200 100.000

Product profile Material: PolyolefinOperating temperature: 70°CReusability: up to 10 mal, depending on loadShore hardness: 54Colour: green or transparentMaximum temperature: 90°CSealing effect: up to 70 bar

Other dimensions and shapes, e.g. flange nuts, shaft screws andother connecting elements on request.

Storage stability The applied Nyseal® coating is hygroscopic and should be stored under airtight and dry conditions at temperatures no higher than 27°C to ensure maximum shelf life.

Nyseal®

Sealing coatWorks Standard

903 2

Application

Melted directly onto the surface ofa metal component, Nyseal formsa reusable seal, eliminating theneed for costly hand mountedproducts.

On self-tapping or thread-tappingscrews, the coating forms an addi-tional sealing feature resistant tovibrations.

Inserts for subsequently mouldedplastic components can be coated,doing away with the need forcostly O-rings.

Example of aNyseal®-coating to WS 903 2

Spray mist does notaffect function

Laye

r thi

ckne

ss0,

2 –

0,4

mm

Dimensions in mm

903 200 030.000903 200 040.000903 200 050.000903 200 060.000903 200 080.000903 200 100.000

M 3M 4M 5M 6M 8M 10

0,61,42,64,5

11,022,0

Articlenumber

Suitable for screws Max. tightening torque 1)in Nm

Animation

12

Nystay® – the precoatingintended to keep fasteners„in their place“ duringtransportation and assembly ...


Product features: User benefits:

Nystay® can be used for all fasteners– whether threaded or not.It facilitates preassembly, especially incase of automatic feeders and robotapplications. The range of applicationsis, of course, not restricted to screws,but encompasses all fasteners such asshafts, rivets, studs, pressed and turnedparts etc.

Nystay® is a plastic precoatingwhich is applied directly to the shankof fasteners in order to secure themduring transportation or assembly intheir relevant application/assemblygroup.

• Holds fasteners in place duringtransport, assembly or installation

• Non-toxic and environmentallyfriendly – plastic coating onpolyolefin basis

• No chemical hardening

• May be positioned at any optionallocation on the shank of a fastener

• Shortens assembly times for end user

Screws coated with Nystay® in thethread area can be pre-inserted into thecomponent. The coating fixes thescrew reliably in the borehole. The enduser will therefore receive a subassem-bly already preassembled with screws,eliminating the need for tediousselection and insertion of appropriatescrews. At the same time, fastenerstocks can so be reduced and simpli-fied. Operating and cycle times duringfinal assembly can be drastically shorte-ned when using pre-assembled compo-nents.

60.1018

Dimensions in mm

13



Application

Nystay® is welded directly ontothe fastener shank. This creates aflexible, annular layer providingreliable protection against lossfor pre-assembled componentsduring transportation or storage.

Example for finding Nystay®-coating according to WS 903 4 on M10 screw:the article number 903 400 100.000

Product profile Material: Base material polyolefinOperating temperature: -40° to +90°Colour: green

Other dimensions and shapes, e.g. flange nuts, headless screws and otherfasteners, on request.

Nystay® is a mere fixation coating/ protection against loss and cannot be examined by means of a functional metric (diameter). Practical tests need to be performed in advance. The coating diameters can be monitoredreliably using examination sleeves of a minimum and a maximum diameter.Pressure points, blank parts and/or imperfect applications of the ring coating do not have any effect on thefunctionality and cannot be avoided.

Storage stability The applied Nystay® coating is hygroscopic and should be stored under airtight and dry conditionsat temperatures no higher than 27°C to ensure maximum shelf life.

Nystay®

ringlacation variable

Nystay®

Fixing coatingWorks Standard

903 4

Articlenumber

Suitable forscrews/bolts from

A A

Ringdiameter(guidline value)

D1

Ringdiameter(guidline value)

D2

903 400 030.000903 400 040.000903 400 050.000903 400 060.000903 400 080.000903 400 100.000

M 3M 4M 5M 6M 8M 10

3,34,45,56,68,8

11,0

344455

Ø 3Ø 4Ø 5Ø 6Ø 8Ø 10

Animation

60.1018

14 60.1018

Nyplas® is a black PVC/Plastisolcoating which is applied directly to theunderneath of the screw head. Thisensures an excellent seal againstliquids and gases. At the same time,this coating acts as a buffer for sensi-tive surfaces of the workpieces to bescrew-fastened. Compared to ourNyseal® coatings, much higher layerthicknesses are achieved using Nyplas®.On principle, a practical test is recom-mended before use in production, inorder to determine the required layerthicknesses.

Nyplas® is an innovative conceptwhich allows Plastisol/PVC sealingmaterial to be applied to screws andother thread elements directly underne-ath the head, flange or at the threadrunout, using the precoatingmethod.The use of washers, sealing rings etc.to be applied manually is no longerrequired.

• Sealing/Soundproofing immediatelyafter screw-fastening

• No need for O-rings, washers etc.

• Reusable

• Very good sealing properties

• Long life.No shrinkage or drying out.

• Temperature application range:-40ºC to +150ºC.

The following automotive specificationsare met:

GM 6086M Type 3GM 1131M Type DFord ESB-M4G70 A or BFord WSK-M4G70Daimler Chrysler MSCD43

Nyplas® – the coatingwhich seals


Product features:

1560.1018



Example for finding Nyplas®-coating according to WS 903 3 on an M10 screw:the article number 903 300 100.000

Product profile Material: Plastisol/PVCOperating temperature: -40° to +150°CColour: black

Surface quality The coating can be applied to all metal materials.Threads should be free of oil and grease.For bright phosphated parts, suitable corrosion preventives are permitted.

Storage stability At least 3 years.Nyplas® does not demonstrate any shrinkage or drying out over the storage period.

Application/Re-usability On principle, a practical test is recommended before series application in order to check the function, compatibility and reusability of the coating in the application.In combination with plastic surfaces (mating surfaces), in particular ABS, acrylic or polycarbonate, the Nyplas coating should not be used. Nyplas is made of plastisol and can impair the material characteristics of plastics in unfavourable circumstances.Possible reusability is also highly dependent on the mating surface and tightening parameters (friction should always be as low as possible in the system) and must be tested in advance without fail using samples.

Nyplas®

Sealing coatingWorks Standard

903 3

Application

Nyplas® is an innovative conceptwhich allows Plastisol/PVCsealing material to be appliedto screws and other threadelements directly underneaththe head, flange or at the threadrunout, using the precoatingmethod.

The use of washers, sealing ringsetc. to be applied manually is nolonger required. * Generally before starting of production would

be recommended a pratical attempt, tocomnited the necessary coating thickness

coat

ing

thick

ness

*

M 3M 4M 5M 6M 8M 10

903 300 030.000903 300 040.000903 300 050.000903 300 060.000903 300 080.000903 300 100.000

Animation

Articlenumber

suitable for screws

16 60.1018

Nycote® – the insulatingcoating ...

Where thick deposits impair the easyrunning properties of screws, Nycote®

offers the ideal protection: from cata-phoretic primers and paints applied during electrodeposition, particularlywhen using the cathodic principle.

The solution: Nycote®

Exhaustive testing has shown that Nycote® has characteristics which prevent cataphoretic primers or paintsfrom adhering to threads.

Wherever the Nycote®-protective layercovers the thread, it is not possible forprimers or paints to adhere to the sur-face.

Threaded components – both internaland external threads – are pre-coatedusing a special technique. They thengo on to be processed in the accus -tomed way without problems on theproduction line, for example using welding machines.

Another benefit: This processingmethod also prevents the often trou -blesome adhesion of welding beads.

Wherever electrodeposition are usedand threaded areas have to be coveredover, it makes sense to use parts pre-coated with Nycote®.

When using this method, the applica-tion of Nycote® on the coupling ele-ments serves to cover the requiredthreaded area: This effectively preventspaint deposits on the threads whichwould impair installation.

Another benefit of Nycote®: Improvedscrew sliding properties. Nycote® redu-ces the coefficient of friction duringinstallation and guarantees a definedclamping force.The process is ideally suited for thefast installation processes demandedby many branches of industry today.

Nycote® replaces the coats of wax orlubricant which are often applied toimprove sliding properties.

Fields of application

17


60.1018

Benefits of applyingan insulating coat ...

How the Nycote®-coating works

Nycote® is a patent-protected coatingmethod involving the application ofinsulating (non-conductive) Teflonpowder on a heated threaded compo-nent. This forms a protective layeragainst unwanted deposits of primers,paints and other surfaces during elec-trodeposition.

The Nycote® thread coating is thelowcost alternative to most customarycoverings. It generates a certain lubri-cation effect at the threads, reducesunwanted noises created during instal-lation and prevents welding splashesfrom adhering to the surface.

When installing the threaded compo-nent, the Nycote® layer is rubbed offthe supporting thread flanks, creatingbright, metallic contact surfaces foroutstanding electrical conductivity anddefined screw connection strength.

The abraded material is pressed intothe cavities of the thread coupling,particularly in the root area of the nutthread and at the crest of the screwthread.

Due to a chemical process, Nycote®

does not adhere to the thread surfacesof the fastening element.

During coating, the Teflon powder ismelted into the pores and cracks inthe surface, so creating a mechanicalbond: Strong enough to hold thecoating on the surface of the threadedelement and weak enough to guaran-tee its abrasion during the installationprocess.

• Nycote® reduces the coefficient offriction, so allowing weld nuts andbolts to be more quickly installedand eliminating the need for subse-quent oiling or greasing.

• The special sliding properties of Nycote® reduce the „chattering“ noise produced by the screwing pro-cess, thus preventing the unpleasant high frequencies created when screwing metal on metal.

• Nycote® is made of Teflon, and is there fore completely unharmful bothto health and to the environment.

• Nycote® protects against unwanteddeposits during electrodeposition,priming and coating, see animation 1.

• Nycote® prevents paint depositsduring painting operations. Duringsubsequent installation of the threaded components, the coating is designed to rub off and so ensure aconductive screw connection, see animation 2.

• Nycote® reduces variance in the coefficient of friction, in order to maintainthe correct pretension force during installation.

• Nycote® prevents the often trouble -some adhesion of welding beadsduring the welding process both onthe surface of welded bolts and alsoin the internal thread of weldednuts. Laborious and costly reworkingoperations are no longer required, see animation 3.

Application in the automotiveengineering industry

All car manufacturers offer long war-ranty periods today as a purchaseincentive. Good corrosion resistance isof instrumental importance here,which the automotive industry hasaddressed by developing new primersand paints.

These new primers present a numberof problems. During electrodeposition,the pre-assembled body in white withall the necessary fastening elementspasses through an immersion tankcontaining the primer, which adheresto each component by means of acataphoretic process, including thefastening elements of any existingthreads.

This coating is difficult to remove, andthis process often involves costlyreworking. However, clean threads areessential to correct and troublefreeassembly.

The following automotive specificationsare met:VW TL 188GM 6076 MFord WSS-M21P27-A3Mercedes Benz MBN 10392Fiat 9.57455

The benefits at a glance

Animation 1

Animation 2

Animation 3

18

... saves reworkand costs

Coating with Nycote®-reducesvariance in the coefficient offriction, achieving a defined degree of pretension.

Variance in the coefficient of frictiontoday plays a co-determining role inthe dimensioning of a screw connec-tion in all currently used methods ofscrew tightening.

As in most cases a torque-controlledmethod of screw connection tighte -ning is used, the required pretensionforce FV determined by the tighte -ning torque MA .

This means that the pretension force FV cannot be measured directly. It iscalculated indirectly as a function ofthe tightening torque.

To simplify, a minimum pretensionforce FV min. is required to ensure thereliable function of a screw connection.This FV min. must be achieved evenunder adverse installation conditions,i.e. at maximum thread friction levels.

The diagrams indicate that with thesame tightening torque but reducedcoefficient of friction, the achievedpretension force FV rises. This can leadto excess stress and failure of thescrew connection.

Due to the relatively large variance inthe coefficients of friction occurringwith uncoated surfaces, it was formerlyfrequently necessary to resort to over-dimensioned screw connections.

The use of Nycote® prevents variance inthe coefficient of friction and so reducesthe need for overdimensioning. Theresult: benefits in terms of both weightand costs. At the same time, the use ofNycote® reduces the coefficient offriction in the thread.

Diagram (1) illustrates the results of acomparative test of ten screws coatedwith Nycote® and ten identical screws,oiled, with a bright steel finish.

With a tightening torque of MA=20,the Nycote®-coated screws demons-tratea variance in the pre-tension force FVof 1.5 kN (bandwidth of the blue dia-gram at a torque of 20 Nm). In thecase of the uncoated screws, a vari -ance of 11 kN results – in other wordsa value almost eight times higher.

The same test, performed using corres -ponding nuts - diagram (2) - indicatesa variance in pretension force of only2.6 kN at a tightening torque ofMA= 22 Nm, while the bright nutsdemonstrate a variance of 10.4 kN.

M 8 X 1.25 weld bolts

0 5 10 15 20 25 300

5

10

15

20

25

30

0 5 10 15 20 25 300

5

10

15

20

25

30

Torque (Nm)

Diagram (1)

Diagram (2)Torque (Nm)

Pret

ensio

n fo

rce

(kN

)Pr

eten

sion

forc

e (k

N)

M 8 X 1.25 square weld nuts

60.1018

19



Tests

1. Prior to coating, the easy running properties of the nut or bolt are tested using a 6H gauge plug or a 6g gauge ring by means of randomtesting.

2. During the coating process, a test of the easy-running properties is performed using KKV test bolts / KKV test nuts at defined intervals andin defined piece numbers. KKV test bolts / nuts mean that the core diameter has been produced to mean tolerance.

3. Final testing is performed using a standard commercially available true-to-gauge screw or nut.

4. In addition, parts can be cathodically immersion painted in order to test that no paint adheres to the coated nut or to the bolt.

A surface treatment of parts prior to Nycote® coating is not necessary. The parts should be delivered in a bright/oiled condition. After coating they are returned in a bright condition or with a short-term corrosion protection (oil).

Nycote® can be applied to galvanized surfaces. The necessary heating process of the threaded parts to the melting temperature of thepowder brings about an optical and functional impairment of the surface. The corrosion protection effect of the galvanized layer may becompromised under certain circumstances. Consequently the user should clarify all details before placing an order.

The coating itself has an unlimited shelf life. However, the corrosion resistance (effect of the corrosion protection agent) should be borne inmind for the complete part. Mechanical stress of the coating, in particular during handling, results in spot damage to the closed layers, inparticularly in the case of bolt threads. There can be localized accumulations of paint in these areas during electrical immersion painting.However, this does not result in any functional impairment.

The coating must be present on the contact surfaces of the thread flanks. In terms of functionality, a full coating on the thread tips or onthe thread base is not necessary and, thus, defects in this area are admissible.

Nycote® is not wear-resistant and, due to the handling in the further process chain, may rub off, in particular on the thread tips. Nycote® is generally suitable for resistance welding (projection welding). Due to higher temperature (>300°C), other procedures are to betested and confirmed by means of trials before.

Nycote®

Insulating plastic coating

Nycote®

Works Standard911/912/913

Application

For protection against cathodi-cally applied electrodepositioncoatings (cataphoretic primersand paints) using the KTL tech-nique. This involves high layerthicknesses which can impairthe easy running properties ofthreads.

Coating of bolt thread WN 911/912:The head remains free of coating.

Coating of nut thread WN 913:The thread chamfer remains free of coating to ensure troublefree welding.

Spray transitions at the start and end of thecoating do not affect the function.

At the same time, coating withNycote® exerts a favourableinfluence on the coefficient offriction occurring in threadedcomponents and prevents thefrequently occurring adhesion ofweld splashes.

Using Nycote®, previously essen-tial cover-up or reworking opera-tions are now eliminated.

Coating length

Coating length

60.1018

20

A variety of standard products areoffered to address different practicalrequirements.

precote 30:For thread sealing and mediumstrengththread locking. Easy dismantling, nosubsequent hardening.

precote 80:Universal screw locking system, high-strength, temperature resistant to170°C; Also suitable for sealing applica-tions.

precote 85:Universal screw locking system, high-strength, with slow thread frictionvalue, temperature resistant to 170°C;Also suitable for sealing applications

precote Varianten:-3 for faster curing

(e.g. precote 80-3)-8 for smaller thread dimensions

(e.g. precote 80-8)

3M:Gluing and sealing function, insensi -tive to oil and grease, reliable, self-lok-king effect in response to vibration forces transversely to the screw axis.

• Extremely good thread locking action against dynamic stress andabsolutely reliable seal.

• High temperature resistance from -50°C to +170°C (with precote 80).

• The nut and locking element areinseparably joined, meaning that thelocking element can never get lostor be forgotten.

• Replaces conventional and in somecases unreliable mechanical lockingelements such as circlips, castellatednuts, plain washers, wire locking elements, locking plates etc.

• Good resistance to chemicals suchas fuels, hydraulic oils, coolants etc.,corrosion-inhibiting.

• Corrosion inhibiting.

• Economical due to large-seriescoating and use of customary instal-lation tools.

• Saves costs for inventory manage-ment, storage and assembly oflocking materials..

precote 30/80/85 • 3M 2353/2510locking coat for external andinternal threads ...

Nut

Nuttolerance field

Bolttolerance field

Heterodispersecapsulespectrum

Bolt

Field of application: Product features

60.1018

21



MA = tightening torqueAll values refer to M10 black tempered screws (thread pairing medium tolerance range), coating lenght ≈ A, 360° all round.

Surface properties The coating can be applied to all metal thread materials.The thread should be free of oil and grease.When using bright, phosphatized parts, suitable corrosion protection agents are admissible. In the case of coefficient of friction-reduced surfaces, a reduction of the MLB can occur.

Hardening properties Curing begins shortly after screwing in the thread. Adjustment and tightening processes should therefore have been completed within 5 minutes. Sufficient functional strength is generally achieved after around 30 minutes; curing is faster with precote -3. For smaller thread dimensions, use precote -8. Precote also cures at temperatures as low as -20°C, but with a lower curing speed

Storage life of coated screws: 3 years at room temperature. precote 30 and precote 80 still offerparticularly good storage properties under humid conditions.

Reusability Screws with coating 3M 2353 and 3M 2510 can be used several times provided the frameworkconditions (thread free of oil and grease) are adhered to. However, as undefinable conditions can occur, we do not advise the reuse of threaded parts which have broken loose.

Further technical details should be clarified depending on the case in question.

External and internal thread coatingwith plastic adhesive (microcapsules)

adhesive coating in line with DIN 267, part 27

precote 30/80/853M 2353/2510

Works Standard 924 to 929

BB1 B2

A

B

A

B F

Application

For the manufacture of ready-toinstall self-locking screws andthreaded components from M2.

Standard coating external

B1 ≈ A, 360° all round.Around 2 to 3 thread turnsremain uncoated to ease thescrewing action (B2).

Standard coating internal

360° all round.Begin of coating, each 1strespectively last thread turn.

precote 30 precote 80 precote 85 3M2510

3M2353

924 ... ... 300926 ... ... 300927 ... ... 300

yellow

mid-range

-50°C to +150°C

0,10 to 0,15

24h

924 ... ... 800926 ... ... 800927 ... ... 800

red

× 0,9 MA

min. 10 Nm-50°C to +170°C

> 0,25

24h

924 ... ... 900926 ... ... 900927 ... ... 900

turquoise

× 0,9 MA

min. 10 Nm-50°C to +170°C

0,10 to 0,15

24h

925 ... ... 000928 ... ... 000929 ... ... 000

blue

× 0,9 MA

min. 10 Nm-30°C to +110°C

0,18 to 0,22

24h

925 ... ... 900928 ... ... 900929 ... ... 900

orange

× 0,9 MA

min. 10 Nm-30°C to +150°C

0,20 to 0,25

72h

Animation

Article no.– Nuts, internal thread– Headed screws– StudsCoating colourBreakaway torque:Installed under pretensionNot installed under pretensionTemperature rangeCoefficient of thread friction µ(Guideline values)Hardening time(room temperature)

60.1018

22

precote 5/15sealing coat forexternal and internal threads ...

These sealing agents, which are compo-sed largely of mineral filling agentsand lubricants on a dispersion basis,are used for precoating processes inmany applications in the automotive,appliance and mechanical engineeringindustries for sealing screw unions.

The coatings, which are dried afterapplication, react neither with thecoated thread nor the mating thread:This makes later releasing and retighte-ning of the screw joint unproblematical.Furthermore, the base material of thethread is not restricted to metallicmaterials.

The dried surface is stable and nonsti-cky, meaning that longer storageperiods at room temperature prior tofinal use for installation are possiblewithout the need for any additionalprecautions.

The good resistance level of the layersto a large number of gases, aqueousand non-aqueous fluids as well ashigh pressure levels also at temperatu-res up to +180°C results in an extre-mely wide range of application forusers of this type of pre-coated threa-ded component.

• Maximum sealing action againstgases and most aqueous and nonaqueous fluids.

• Depending on the material and configuration of the thread coupling,connections offer a reliable seal evenup to pressure levels as high as 50 bar.

• The threaded component and sealingelement are inseparably connected,excluding the possibility of costlysecondary installation operationsdue to forgotten or lost seals.

• Economical due to large-series coating and capacity for the use ofautomatic installation equipment.

• Saves on inventory management,storage and installation of additionalsealing elements.

• precote 15: certified according to DIN DVGW

Field of application Product features

60.1018

23



External and internal thread coatingwith dispersion layer

Thread seal

precote 5/15Works Standard

924/926/927

BB1 B2

A

B

A

B F

Applications The sealants can be applied to all metal and non-metal threaded components such as screws,studs, set screws, fittings etc. both in cylindrical/cylindrical and also cylindrical/conical couplings from thread diameter 4 mm.

Characteristics Sealing action against gases, aqueous and non-aqueous fluids under high pressure levels andtemperatures up to max. +180°C

Preliminary treatments If the coated threads are to be used more than once, the surfaces must be dry, free of dirt,oil, separating agents and other contamination prior to coating.

Application

For the manufacture of ready-toinstall, sealing screws andthreaded components from M2.

Standard coating external

B1 ≈ A, 360° all round.Around 2 to 3 thread turnsremain uncoated to ease thescrewing action (B2).

Standard coating internal

360° all round.Begin of coating, each 1strespectively last thread turn.

Article no.– Headed screws– Studs– Stud screwsCoating colourTemperature rangeStorage life / RT

924 ... ... 500926 ... ... 500927 ... ... 500

white-60°C to +160°Cat least 3 years

precote 5

924 1.. ... 500926 1.. ... 500927 1.. ... 500

white-60°C to +180°Cat least 3 years

precote 15

Animation

60.1018

24

precote Top 300® • OKS 1765 –precoating for outstanding lubrication capability

precote Top 300® is a new type of syn-thetic wax based precoating which pro-duces a touch-proof, dry lubricant film. Partial precoating with precote Top 300®

offers an ideal solution wherever lowthread torque coefficients or reducedfriction spread are required. It can alsobe used to reduce the installation resistance of self-tapping or trilobularscrews.

precote Top 300® can be applied to allthreaded elements, and produces a dryyellowish lubricant film.

It effectively prevents cold weldingwhen working with problematicalmaterial combinations, and also pre-vents fastening problems – particularlywith VA screws. precote Top 300®

permits controlled installation of screwfastenings.The coating can also be partiallyapplied under the screw head, permit-ting combination with screw lockingcoatings in the thread while ensuringadherence to prescribed coefficient offriction windows, for example in screwfasteners used in the automotiveindustry.

• Ideal way of reducing installationtorque on self-tapping or trilobularscrews

• Non-toxic, assembly friendly

• Cost-effective by saving total installation costs

• Prevents „chattering“ and „galling”during the installation of screw fasteners

• Captive „precoating” ready for useon the threaded element

• Male and female threads can becoated

Field of application Product features:

60.1018

25



Coatingsynthetic wax-based

precote Top 300®

OKS 1765Works Standard 930

Application

Coating of a dry, tack-free lubricant film on thread surfaces.

Standard coating on malethread

All round 360°On placement of order, pleasestate coating length.

Coating length

Coat

ing

leng

th

Other dimensions on request

Example for finding precote Top 300®-coating according to WS 930 on an M10 screw:the article number: 930 700 100.000

Material: Synthetic wax

Colour: yellowish, transparent

60.1018

Article number Suitable for Screws

Top 300® yellowish OKS 1765 yellowish OKS 1765 transparent 930 700 030.000 930 300 030.000 930 400 030.000 M 3 930 700 040.000 930 300 040.000 930 400 040.000 M 4 930 700 050.000 930 300 050.000 930 400 050.000 M 5 930 700 060.000 930 300 060.000 930 400 060.000 M 6 930 700 080.000 930 300 080.000 930 400 080.000 M 8 930 700 100.000 930 300 100.000 930 400 100.000 M 10

corr

igen

dum

04/

2020

26 60.1018

precote 709 –The anti-seize thread precoating

For use on threaded parts like screwsand studs, plugs and pipe threadswhich require a high preload onassembly without surface welding butafter exposure to high temperaturepermit an easy and non-destructivedisassembly.

precote 709is a nonreactive, film-forming dispersionwith mineral solid lubricants for coatingthreaded parts, enabling controlledassembly and disassembly forhigh-temperature applications.

Material: Dispersion with mineral solid lubricants

Colour: anthracite

Operating temperature: up to +850°C

Thread coefficient of friction: 0,09 – 0,13

Installation torque: at M10 1 – 2 Nm

Shelf life: 4 years at room temperature

Coating type Partial screw Article number 926… …400Partial stud Article number 927… …400

• Dry, tack-free film

• Physiologically harmless duringprocessing and after coating

• Low-cost precoating

• Constant low coefficient of friction

• No galling or cold welding

• Prevents corrosion in the threadedconnection

• Separation effect up to +850°C

• Good chemical resistance


27


60.1018

precote 10-1 –Prevail torque precoating

On threaded parts both in cylindrical/cylindrical and cylindrical/conicalcombinations of screws and studs orplugs for locking and fixing as well assealing against splash water or otherfluids. The special formulation elimina-tes the need to melt the coating.Repeated use is possible.

precote 10-1Is a non-reactive, film-forming polya-mide dispersion for coating threadedparts. It is a physiologically harmlessprecoating for immediate locking andsealing of cylindrical and conical thre-ads. The dried film is tack-free and dryto the touch.

Material: Non-reactive polyamide dispersion

Colour: green

Operating temperature: up to 100° C (water) / to 150° C (oil) / RT for fuel and diesel

Torque levels: can only be determined after practical testing

Shelf life: Unlimited at room temperature

Coating type Screw all round Article number 924… …100Stud all round Article number 926… …100Internal thread Article number 927… …100

• Forms touch-proof film

• Absolutely tack-free coating

• Fixes, locks and seals immediatelyon assembly

• Reusable

• Physiologically harmless, both duringprocessing and in coated condition

• Threaded parts can be coated inadvance

• Prevents corrosion in the threadedconnection

• Can be applied on all threadedmetal materials

• Excellent chemical resistance



... in Germany

... and around the world.

KerbKonus -Close to its customers.Around the world. Acrossevery sector of industry.

Kerb-Konus-Vertriebs-GmbHP.O. Box 163392206 Amberg

Phone +49 9621 679-0Fax +49 9621 679444e-mail [email protected]

Internet www.kerbkonus.de This

publ

icat

ion

is no

t sub

ject

to th

e up

datin

g se

rvic

e / P

ublic

atio

n no

. 60.

1018

First and foremost, for you customer proximity means a rapid response toyour requirements and the fast, efficient realization of the right fasteningsolution for you.

Kerb-Konus Kerb-Konus UKFasteners Pvt. Ltd. Rugeley/StaffordshireKolhapur/India UK

K.K.V. Corporation Japan Kerb Konus Espanola S. A.Osaka/Japan Navalcarnero/Madrid

Spain

KKV AG KKV BelgiumZug/Switzerland Aalst/Belgium

Precision Fasteners Inc. SofrafixSomerset, New Jersey/USA Bethune

France

Kerb-Konus Italia s.r.l.Mulazzano (LO)/Italy

Other foreign agents in a wide number of countries.Addresses on request or under www.kerbkonus.com

Amberg Headquarters Production and SalesHadamar

Kerb-Konus-Vertriebs-GmbHWernher-von-Braun-Straße 792224 Amberg


Threaded inserts for

metal

Ensat®Mubux®-Z

Mubux®-MO


No.20


Threaded insertsfor plasticand wood

Ensat®B-Lok®

Mubux®-AS-Lok®


No.30

Fasteners forthin sheet

metalAnchor®

Clifa®


No.40


… technologies for a reliable hold

Punched RivetSystem

for thin metalcomponents

Tuk-Rivet®


No.45

thread locking and sealing insulating coating · •no metering problems of the type encountered...

Documents