hex cap presentation 2013
DESCRIPTION
A training presentation on hex cap screw products provided by Brighton Best International.TRANSCRIPT
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Welcome To
An Introduction to Hex Head Cap Screw Products
© Brighton-Best International, Inc.
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Brighton Best was founded in 1925
With 20 US locations, BBI is the largest master distributor of commercial fasteners
Stocking over 80,000 SKUs, BBI offers the most comprehensive line of fasteners in the Industry
Brighton Best International
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Learning Objectives
Identify the Grades
Understand the Grade Characteristics
Name the Available Finishes
What Makes L9 Special
Who Uses Hex Caps?
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K n o w n b y t w o n a m e s , h e x h e a d c a p
s c r e w s o r s i m p l y , h e x c a p s c r e w s , h e x
h e a d c a p s c r e w p r o d u c t s a r e a l e a d i n g
l i n e f o r i n d u s t r i a l s u p p l i e r s a r o u n d
t h e w o r l d . Av a i l a b l e i n m u l t i p l e
g r a d e s a n d f i n i s h e s b a s e d o n t h e
a p p l i c a t i o n , o u r H e x C a p s a r e s o u r c e d
b o t h d o m e s t i c a l l y a n d i m p o r t e d .
Hex Cap Products
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Primary Markets
Industrial
Automotive
Electrical
Power/Energy
Military
Rail
Municipal
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Hex Head Cap Screws vs. Hex Bolts
A cap screw has a flat washer face underneath the head
Washer Face
• Hex bolts do not
Cap screws are chamfered on the end easing its insertion into a tapped hole.
Tightening
• Hex bolts require a nut
Cap screws fall under ASTM J429Specs
• Hex bolts fall under ASTM A307
Cap screws have tighter tolerances than Hex boltsTolerances
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What is on a Buyer’s Mind?
What Grade is Required? Hex cap screws come in 3 grades based on
strength.
What finish do they need? It is important to know whether the end
user needs them plain or plated
Domestic or Imported? Some applications require domestic
material, while others do not. Whether domestic or import, all hex caps fall under the same specifications and are made under IFI standards.
Is it inch or metric? Knowing whether the need is inch or metric
is critical to servicing the buyer’s needs.
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• An assembly operation not requiring excessive strength
• Electrical repair• General Hardware
Applications
Applications
HeadMarking
Specification Fastener Discription
Material Nominal Size Range (in.)
Proof Load (psi)
Yield Strength Min.
(psi)
Tensile Strength Min.
(psi)
No Head Mark ASTM SAE J429
Bolts, Screws Low or Medium Carbon Steel
¼ thru ¾¾ - 1 ½
55,00033,000
57,00036,000
74,00060,000
Plain, Zinc CR+3
Grade 2
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HeadMarking
Specification Fastener Discription
Material Nominal Size Range (in.)
Proof Load (psi)
Yield Strength Min.
(psi)
Tensile Strength Min.
(psi)
Three Radial Lines
ASTM SAEJ429
Bolts, Screws Low or Medium Carbon Steel
¼ thru 11 – 1 1/21 ½ - 3
85,00074,00055,000
92,00081,00058,000
120,000105,00090,000
Grade 5
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M A N U F A C T U R E D F R O M M E D I U M C A R B O N S T E E L , M E T R I C H E X H E A D S M A D E T O C L A S S 8 . 8 A R E S I M I L A R T O A G R A D E 5 I N S T R E N G T H .
Nominal Size Range (mm)
Proof Load (Mpa)
Min. Yield Strength (MPa)
Min. Tensile Strength (MPa)
All sizes below 16mm
580 640 800
16mm – 72mm 600 660 830
Plain, Zinc-Blue
Metric 8.8
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HeadMarking
Specification Fastener Discription
Material Nominal Size Range (in.)
Proof Load (psi)
Yield Strength Min.
(psi)
Tensile Strength Min.
(psi)
Six Radial Lines ASTM SAE J429
Bolts, Screws Medium Carbon,
Quenched and Tempered
¼ - 1 1/2 120,000 130,000 150,000
P R O D U C E D U S I N G M E D I U M C A R B O N S T E E L , T H E G R A D E 8 H E X C A P S C R E W S A R E U S E D I N A U T O M O T I V E A N D O T H E R H I G H - S T R E S S E N V I R O N M E N T S . A V A I L A B L E I N P L A I N A N D Z I N C - Y E L L O W F I N I S H E S , B B I S U P P L I E S G R A D E 8 P R O D U C T S F R O M T H E U . S . A N D T A I W A N . Plain, Zinc-
Yellow CR+3
Grade 8
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P R O D U C E D U S I N G M E D I U M C A R B O N S T E E L , T H E C L A S S 1 0 . 9 M E T R I C H E X C A P S C R E W S , A R E C O M P A R A B L E T O A G R A D E 8 I N S T R E N G T H . A V A I L A B L E I N P L A I N A N D Z I N C - B L U E F I N I S H F O R C O R R O S I O N R E S I S T A N C E .
Nominal Size Range (mm)
Proof Load (Mpa)
Min. Yield Strength (MPa)
Min. Tensile Strength (MPa)
5mm – 100mm 830 940 1040
Plain, Zinc-Blue
Metric 10.9
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L 9 H e x C a p S c r e w
H i g h e r H e a d a l l o w s f o r i n c r e a s e d w r e n c h a b i l i t y
1 8 0 , 0 0 0 p s i m i n T e n s i l e S t r e n g t h
L 9 H e x N u t
L a r g e r t h a n s t a n d a r d n u t w a l l s
L 9 P r e v a i l i n g T o r q u e H e x N u t
F o r a s s e m b l i e s s u b j e c t t o v i b r a t i o n
L 9 S A E o r U S S F l a t W a s h e r s
H R C 4 0 - 4 5 a n d p l a t e d f i n i s h e s t h a t a s s i s t i n t o r q u e , w i t h s i n g l e c h a m f e r i n s i d e d i a m e t e r .
Made in the USA
The L9 Fastening System
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I nch P ro duc t s Met r ic P ro duc t
18 -8 He x Ca p s A 2 He x Ca p s
(D i n 931 , 933 )
316 He x Ca ps
18 -8 F u l l Th r e a d e d He x Ca p s
Stainless Hex Cap Products
Series Property Marking Diameter Range Tensile Strength ksi
18-8 F593C
F593D
¼ - 5/8
¾ - 1 ½
100 - 150
85 - 140
316 F593G
F593H
¼ - 5/8
¾ - 1 ½
100 – 150
85 - 140
A2 (DIN 931, 933) A2-70 ALL 700 MPa
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Diameter and Thread Comparison
Course and Fine Threaded Fasteners
The thread length is the number of threads per inch. So for ¼-20, you have a 1/4’ diameter fastener with 20 threads per inch.
Course threaded fasteners have fewer threads per inch than fine threaded products.
COARSE FINE
M6-1.00 M6-0.75
M8-1.25 M8-1.00
M10-1.50 M10-1.25
M12-1.75 M12-1.50
M14-2.00 M14-1.50
M16-2.00 M16-1.50
M20-2.50 M20-1.50
M22-2.50 M22-1.50
M24-3.00 M24-2.00
M27-3.00 M27-2.00
M30-3.50 M30-2.00
M36-4.00 M36-2.00
M42-4.50 M42-2.00
M48-5.00 M48-2.00
COARSE FINE
¼-20 ¼-28
5/16-18 5/16-24
3/8-16 3/8-24
7/16-14 7/16-20
½-13 ½-20
9/16-12 9/16-18
5/8-11 5/8-18
¾-10 ¾-16
7/8-9 7/8-14
1-8 1-14
1 1/8-7 1 1/8-12
1 ¼-7 1 ¼-12
1 3/8-6 1 3/8-12
1 ½-6 1 ½-12
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Tensile Strength
Comparison
Tensile strength is the maximum stress level that a fastener can withstand before it exhibits structural loss. That is to say the maximum amount of pressure a fastener can be pulled before it breaks.
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Head and Wrench Size
Want to know what wrench size goes with each diameter?
Bolt Diameter Wrench Size
#6 ¼
#8 ¼
#10 5/16
#12 5/16
¼ 7/16 or 3/8
5/16 ½
3/8 9/16
7/16 5/8
½ ¾
9/16 13/16
5/8 15/16
¾ 1 1/8
7/8 1 5/16
1 1 ½
1 1/8 1 11/16
1 ¼ 1 7/8
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Grade 5 Hex Cap Possibilities
Finding Hex Caps in BBIsWeb-Ordering System
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A. How many inch grades of hex cap screws does BBI carry?
B. How many families of Grade 5 hex cap screws does BBI offer?
C. What ASTM specification does hex cap screws fall under?
D.Are hex cap screws available imported and domestic?
E. Are Grade 8 hex cap screws stronger than Grade 5 hex cap screws?
F. What is the head marking for a L9 hex cap screws?
G. What finishes are available for Grade 2 hex cap screws?
Questions
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A. Three, Grades 2, 5 and 8
B. 8
C. J429
D.Yes
E. Yes, their tensile strength is 92k min vs. 120k min, 120k
max vs. 150k max
F. L9
G. Plain and zinc-plated
Answers
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On beha l f o f t he en t i r e B r i gh ton Bes t f am i l y, we wan t t o thank you f o r t ak ing a f ew m inu tes
t o l ea rn more abou t who we a re , ou r
va lue - sys tem and ou r p roduc t s .
Eve ry t ime you p l a ce an o rde r w i th us , you a re g i v i ng us an oppo r tun i ty t o p rove ou r
commi tment t o se rv ing you .
Thank you f o r the oppo r tun i ty and p r i v i l ege o f work ing w i th you .
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