screw constructional dimension tables

A S I A H A N

Head Dimensions for 82° Flat Head Self

Nominal

Size

These

Lengths or

Shorter are

Undercut

A Head

Dimensions

Diameter Height

Types

A and

AB Other

Types Max Min Max

0 3/16 1/8 .112 .096 .035

1 3/16 5/32 .137 .120 .043

2 3/16 3/16 .162 .144 .051

4 1/4 1/4 .212 .191 .067

5 1/4 1/4 .237 .215 .075

6 5/16 5/16 .262 .238 .083

7 3/8 3/8 .287 .262 .091

8 7/16 7/16 .312 .285 .100

10 1/2 1/2 .362 .333 .116

12 9/16 9/16 .412 .380 .132

14 5/8 - .462 .427 .148

1/4 5/8 5/8 .477 .442 .153

5/16 13/16 5/8 .597 .556 .191

3/8 - 5/8 .717 .670 .230

Note: The length of a flathead screw is always measured by the total length of the screw,

from the top of the head to the extreme end of the threads.

Chipboard Screw , Sunta vidas

N I N D U S T R I A L L T

Concerning Quality…

WWW.ASIAHAN.COM

Head Dimensions for 82° Flat Head Self-Tapping Screws - ANSI B18.6.4

H J T M R N F

Dimensions Slot Dimensions Phillips

Dimensions Protrusion

Above

Gaging

Diameter Height Width Depth Dia Depth Width

Max Min Max Min Max Min Ref Ref Ref Max Min

.035 .026 .023 .016 .015 .010 .062 .035 .014 .026 .016

.043 .033 .026 .019 .019 .012 .070 .043 .015 .028 .016

.051 .040 .031 .023 .023 .015 .096 .055 .017 .029 .017

.067 .055 .039 .031 .030 .020 .122 .081 .018 .032 .019

.075 .062 .043 .035 .034 .022 .148 .074 .027 .034 .020

.083 .069 .048 .039 .038 .024 .168 .094 .029 .036 .021

.091 .076 .048 .039 .041 .027 .176 .102 .030 .037 .022

.100 .084 .054 .045 .045 .029 .182 .110 .030 .039 .023

.116 .098 .060 .050 .053 .034 .198 .124 .032 .042 .025

.132 .112 .067 .056 .060 .039 .262 .144 .035 .045 .027

.148 .126 .075 .064 .068 .044 .276 .160 .036 .049 .029

.153 .131 .075 .064 .070 .046 .276 .160 .036 .050 .029

.191 .165 .084 .072 .088 .058 .358 .205 .061 .057 .034

.230 .200 .094 .081 .106 .070 .386 .234 .065 .065 .039


of the head to the extreme end of the threads.

Chipboard Screw , Sunta vidası , wood screw , ağaç vidası , Confirmat Screw , Kabin vidası , square screw , kare vida

T D .

ANSI B18.6.4

G

Phillips

Driver

Size Gaging

Diameter

.078 0

.101 0

.124 1

.172 1

.196 2

.220 2

.243 2

.267 2

.313 2

.362 3

.410 3

.424 3

.539 4

.653 4


Head Dimensions for Undercut Flat Head Self Tapping Screws

Nominal

Size

These

Lengths or

Shorter

are

Undercut

A Head Dimensions

Diameter Height

Types

A and AB Other

Types Max Min Max

0 3/16 1/8 .112 .096 .025

1 3/16 5/32 .137 .120 .031

2 3/16 3/16 .162 .144 .036

4 1/4 1/4 .212 .191 .047

6 5/16 5/16 .262 .238 .059

7 3/8 3/8 .287 .262 .064

8 7/16 7/16 .312 .285 .070

10 1/2 1/2 .362 .333 .081

12 9/16 9/16 .412 .380 .092

1/4 5/8 5/8 .477 .442 .107

5/16 13/16 5/8 .597 .556 .134

3/8 - 5/8 .717 .670 .161


the top of the head to the extreme end of the threads.

Head Dimensions for Undercut Flat Head Self Tapping Screws - ANSI B18.6.4

H J T M R N F Head Dimensions Slot Dimensions Recess Dimensions

Protrusion

Above Gaging

Diameter Height Width Depth Dia Depth Width

Max Min Max Min Max Min Ref Ref Ref Max Min

.025 .018 .023 .016 .011 .007 .069 .035 .014 - -

.031 .023 .026 .019 .014 .009 .070 .043 .015 - -

.036 .028 .031 .023 .016 .011 .088 .048 .017 .029 .017

.047 .038 .039 .031 .022 .014 .110 .070 .018 .032 .019

.059 .048 .048 .039 .027 .017 .140 .066 .025 .036 .021

.064 .053 .048 .039 .030 .019 .148 .074 .027 .037 .022

.070 .058 .054 .045 .032 .021 .168 .094 .029 .039 .023

.081 .068 .060 .050 .037 .024 .182 .110 .030 .042 .025

.092 .078 .067 .056 .043 .028 .226 .110 .030 .045 .027

.107 .092 .075 .064 .050 .032 .244 .124 .032 .050 .029

.134 .116 .084 .072 .062 .041 .310 .157 .053 .057 .034

.161 .140 .094 .081 .075 .049 .358 .205 .061 .065 .039


of the head to the extreme end of the threads.

ANSI B18.6.4

G

Phillips

Driver

Size

Above Gaging

Gaging

Diameter

Min

- 0 - 0

.017 .124 1

.019 .172 1

.021 .220 2

.022 .243 2

.023 .267 2

.025 .313 2

.027 .362 3

.029 .424 3

.034 .539 4

.039 .653 4


Head Dimensions for Square Drive Flat Head Self Tapping Screws

Nominal Size

Or

Basic Screw

Diameter

A

Head Diameter

Max Min

4 .1120 .212 .191

6 .1380 .262 .238

8 .1640 .312 .285

10 .1900 .362 .333

12 .2160 .412 .380

1/4 .2500 .477 .442

5/16 .3125 .597 .556

The recess has a square center opening, slightly tapered side walls and a conical bottom.



Head Dimensions for Square Drive Flat Head Self Tapping Screws

M T

Driver

Size Recess Square Recess Depth

Max Min Max Min

.071 .0696 .073 .063 0

.091 .090 .113 .105 1

.1126 .111 .140 .119 2

.1126 .111 .140 .119 2

.133 .1315 .165 .155 3

.133 .1315 .165 .155 3

.191 .1895 .201 .191 4




Head Dimensions for Square Drive Flat Head Self Tapping Screws - IFI

F

Gauge

Penetration

Max Min

.038 .032

.065 .057

.075 .065

.075 .065

.095 .085

.095 .085

.100 .090



Head Dimensions for Torx® Drive Flat Head Self Tapping Screws

Nominal Size

G

Head Diameter

Max Sharp Min Sharp

4 .225 .209

6 .279 .257

8 .332 .308

10 .385 .359

1/4 .507 .447

Head Dimensions for Torx® Drive Flat Head Self Tapping Screws -

T B F Maximum

Penetration

of "No

(Fallawat)

Head Diameter Head Height Recess

Diameter Gauge

Penetration

Min Sharp Abs Min Ref Ref Min

.195 .067 .094 .028

.244 .083 .111 .035

.282 .100 .132 .040

.340 .116 .155 .050

.452 .153 .200 .075

Camcar

Maximum

Penetration

of "No-Go"

Gauge

(Fallawat)

Torx®

Driver

Size

.019 T8

.022 T10

.026 T15

.031 T20

.040 T27

Square and Hex Machine Screw Nuts

Nominal Size

or Basic

Thread Diameter Width Across Flats

Basic

0 .060 5/32

1 .073 5/32

2 .0860 3/16

3 .0990 3/16

4 .1120 1/4

5 .1250 5/16

6 .1380 5/16

8 .1640 11/32

10 .1900 3/8

12 .2160 7/16

1/4 .2500 7/16

5/16 .3125 9/16

3/8 .3750 5/8

Square and Hex Machine Screw Nuts Properties

Description

Hex Machine Screw Nut:

chamfered corners. Threads are to be Unified Standard, class 2B.

Square MachineScrew Nut:

bottoms and no chamfer. Threads are to be Unified Course thread class 2B

Appication

&

Advantaged

Hex Nut: Designed to be used specifically with machine screws. Stain

with stainless machine screws where parts are subject to corrosive environments.

Square Nuts:

Material

Plating

Square and Hex Machine Screw Nuts - ANSI/ASME B18.6.3

F G

Width Across Flats Width Across Corners

Square Hex

Max Min Max Min Max Min

.156 .150 .221 .206 .180 .171

.156 .150 .221 .206 .180 .171

.188 .180 .265 .247 .217 .205

.188 .180 .265 .247 .217 .205

.250 .241 .354 .331 .289 .275

.312 .302 .442 .415 .361 .344

.312 .302 .442 .415 .361 .344

.344 .332 .486 .456 .397 .378

.375 .362 .530 .497 .433 .413

.438 .423 .619 .581 .505 .482

.438 .423 .619 .581 .505 .482

.562 .545 .795 .748 .650 .621

.625 .607 .884 .833 .722 .692

Square and Hex Machine Screw Nuts Properties

Hex Machine Screw Nut: A six-sided internally threaded fastener with flat tops and


Square MachineScrew Nut: A four-sided, internally threaded fatener with flat tops and


Designed to be used specifically with machine screws. Stainless nuts are used


Square Nuts: Offers a greater bearing surface for wrenching.

Steel: Any low carbon steel

Stainless: 18-8 stainless steel

See plating page for plating information.

ANSI/ASME B18.6.3

H

Thickness

Max Min

.050 .043

.050 .043

.066 .057

.066 .057

.098 .087

.114 .102

.114 .102

.130 .117

.130 .117

.161 .148

.193 .178

.225 .208

.257 .239

sided internally threaded fastener with flat tops and


sided, internally threaded fatener with flat tops and


less nuts are used


Offers a greater bearing surface for wrenching.

Small Pattern Hex Machine Screw Nuts

Nominal Size

or Basic

Thread Diameter Width Across Flats

Basic

4 .1120 3/16

6 .1380 1/4

8 .1640 1/4

10 .1900 5/16

Small Pattern Hex Machine Screw Nuts Properties

Description Similar in design to standard hex machine screw nuts but with smaller widths accross the

Applications

&

Advantages

Designed to be used with machine screws in areas where there is limited space for

wrenching. Stainless nuts are used with stainless machine screws where parts are subject

Material

Plating

Small Pattern Hex Machine Screw Nuts - ANSI/ASME B18.6.3

F G

Width Across Flats Width Across Corners

Max Min Max Min Max

.188 .180 .217 .205 .066

.250 .241 .289 .275 .098

.250 .241 .289 .275 .098

.312 .302 .361 .344 .114

Small Pattern Hex Machine Screw Nuts Properties - ANSI/ASME B18.6.3

Similar in design to standard hex machine screw nuts but with smaller widths accross the

flats and across the corners.



to corrosive conditions.

Steel: Any low carbon steel

Stainless: 18-8 stainless steel

See plating page for plating information.

ANSI/ASME B18.6.3

H

Thickness

Max Min

.066 .057

.098 .087

.098 .087

.114 .102

ANSI/ASME B18.6.3

Similar in design to standard hex machine screw nuts but with smaller widths accross the



Head Dimensions for Pan Head Machine Screws and SEMS

Nominal

Size

A H

Head

Diameter

Height of Head

Slotted

Max Min Max Min Max

0 .116 .104 .039 .031

2 .167 .155 .053 .045

3 .193 .180 .060 .051

4 .219 .205 .068 .058

5 .245 .231 .075 .065

6 .270 .256 .082 .072

8 .322 .306 .096 .085

10 .373 .357 .110 .099

12 .425 .407 .125 .1125

1/4 .492 .473 .144 .130

5/16 .615 .594 .178 .162

3/8 .740 .716 .212 .195

Head Dimensions for Pan Head Machine Screws and SEMS - ANSI B18.6.3

H1 J T M G

Height of Head Slot Width Slot Depth

Dimensions of Recess

Recessed Diameter Depth

Max Min Max Min Max Min Max Min Max

.044 .036 .023 .016 .022 .014 .067 .054 .039

.062 .053 .031 .023 .031 .022 .104 .091 .059

.071 .062 .035 .027 .036 .026 .112 .099 .068

.080 .070 .039 .031 .040 .030 .122 .109 .078

.089 .079 .043 .035 .045 .034 .158 .145 .083

.097 .087 .048 .039 .050 .037 .166 .153 .091

.115 .105 .054 .045 .058 .045 .182 .169 .108

.133 .122 .060 .050 .068 .053 .199 .186 .124

.151 .139 .067 .056 .077 .061 .259 .246 .141

.175 .162 .075 .064 .087 .070 .281 .268 .161

.218 .203 .084 .072 .106 .085 .350 .337 .193

.261 .244 .094 .081 .124 .100 .389 .376 .233

ANSI B18.6.3

N Phillips

Driver

Size

Dimensions of Recess

Width

Min

.013 0

.017 1

.019 1

.019 1

.028 2

.028 2

.030 2

.031 2

.034 3

.036 3

.059 4

.065 4

Combination Drive Pan Head Machine Screws

Nominal

Screw

Size

G H

Head Dimensions

Head

Diameter Head

Height

Max Min Max Min Max

4 .219 .205 .080 .070 .039

6 .270 .256 .097 .087 .048

8 .322 .306 .115 .105 .054

10 .373 .357 .133 .122 .060

12 .425 .407 .125 .112 .067

1/4 .492 .473 .175 .162 .075

5/16 .615 .594 .218 .203 .084

Combination Drive Pan Head Machine Screws

J A M T N

Recess

Penetration

Slot Dimensions Recess Dimensions

Width Depth Width Depth Wing

Depth

Max Min Max Min Max Min Max Min Min Max

.039 .031 .040 .030 .122 .109 .078 .060 .019 .071

.048 .039 .050 .037 .166 .153 .091 .066 .028 .080

.054 .045 .058 .045 .182 .169 .108 .082 .030 .097

.060 .050 .068 .053 .199 .186 .124 .100 .031 .113

.067 .056 .077 .061 .259 .246 .141 .115 .034 .124

.075 .064 .087 .070 .281 .268 .161 .135 .036 .144

.084 .072 .106 .085 .350 .337 .193 .169 .059 .173

Recess

Penetration Driver

Size

Max Min

.071 .053 1

.080 .055 2

.097 .071 2

.113 .089 2

.124 .098 3

.144 .118 3

.173 .149 4

Torx® Drive Pan Head Machine Screws

Screw

Size

D

Head Dimensions

Head Diameter Head Height

Max Min Max

2 .167 .155 .062

4 .219 .205 .080

6 .270 .256 .097

8 .322 .306 .115

10 .373 .357 .133

1/4 .492 .473 .175

5/16 .615 .594 .218

Torx® is a registered trademark of the Camcar Corporation, division of Textron Industries.

Torx® Drive Pan Head Machine Screws - Camcar

H R G

Head Dimensions Recess Dimensions

Head Height Diameter

(Ref)

Gauge

Penetration

(Min)

Maximum

Penetration

(Falloway)Max Min

.062 .053 .094 .030 .022

.080 .070 .111 .035 .026

.097 .087 .132 .045 .031

.115 .105 .155 .055 .036

.133 .122 .178 .070 .040

.175 .162 .221 .085 .044

.218 .203 .266 .105 .047


Driver

Size Maximum

Penetration

(Falloway)

.022 T8

.026 T10

.031 T15

.036 T20

.040 T25

.044 T30

.047 T40


Pozidrive® (Type 1A) Pan Head Machine Screws

Screw

Size

A


Max Min Max

2 .167 .155 .062

4 .219 .205 .080

6 .270 .256 .097

8 .322 .306 .115

10 .373 .357 .133

12 .425 .407 .151

1/4 .492 .473 .175

Pozidriv® is a trademark of the Phillips Screw Company. Our fasteners with the 1A

not manufactured by or connected with the producers of Pozidriv® fasteners.

Pozidrive® (Type 1A) Pan Head Machine Screws - ASME B18.6.3 1998

H M G N Recess

Penetration

Gaging

DepthHead Height

Recess Dimensions

Diameter Depth Width

Min Max Min Max Min Min Max

.053 .104 .091 .064 .048 .028 .053

.070 .122 .109 .083 .067 .029 .072

.087 .162 .149 .092 .074 .040 .076

.105 .177 .164 .108 .090 .041 .092

.122 .193 .180 .125 .106 .041 .108

.139 .254 .241 .139 .121 .056 .117

.162 .273 .260 .159 .141 .057 .137

Pozidriv® is a trademark of the Phillips Screw Company. Our fasteners with the 1A


ASME B18.6.3 1998

Recess

Penetration

Gaging

Depth

Driver

Size

Min

.037 1

.056 1

.058 2

.074 2

.090 2

.099 3

.119 3

Pozidriv® is a trademark of the Phillips Screw Company. Our fasteners with the 1A-drive are


Square Socket Pan Head Machine Screws

Nominal

Size or

Basic

Screw

Diameter

A


Max Min Max

4 .112 .219 .205 .086

6 .138 .270 .256 .103

8 .164 .322 .306 .120

10 .1900 .373 .357 .137

12 .2160 .425 .407 .153

1/4 .2500 .492 .473 .175

5/16 .3125 .615 .594 .216

Square Socket type of recess has a square center opening, with slightly tapered sides and a conical

Square Socket Pan Head Machine Screws - IFI

H M T P

Head Height Recess Square Recess Depth Penetration

Gaging Depth

Max Min Max Min Max Min Max

.086 .075 .071 .0696 .073 .063 .038

.103 .091 .091 .090 .113 .105 .065

.120 .107 .1126 .111 .140 .119 .075

.137 .123 .1126 .111 .140 .119 .075

.153 .139 .133 .1315 .165 .155 .095

.175 .160 .133 .1315 .165 .155 .095

.216 .198 .191 .1895 .201 .191 .100


bottom.

P

Driver

Size Penetration

Gaging Depth

Min

.032 0

.057 1

.065 2

.065 2

.085 3

.085 3

.090 4


Description

Pan Head

Combination

Machine Screw

Round Head

Combination

Machine Screw

Truss Head

Combination

Machine Screw

Flat Head

Phillips

Machine Screw

Undercut

Flat Head

Phillips

Machine Screw

Flat Head

100°

Phillips

Machine Screw

Fillister Head

Phillips

Machine Screw

Oval Head

Phillips

Machine Screw

Pan Head

Phillips

Machine Screw

MACHINE SCREWS Description

MATERIAL SIZES

Pan Head

Combination

Machine Screw

Zinc Plated

Steel 4-40x1/8 thru 1/4

Round Head

Combination

Machine Screw

Zinc Plated

Steel 6-32x2 thru 1/4

Truss Head

Combination

Machine Screw

Zinc Plated

Steel 6-32 thru 1/4

Flat Head

Phillips

Machine Screw

Zinc Plated


Undercut

Flat Head

Phillips

Machine Screw

Zinc Plated


Flat Head

100°

Phillips

Machine Screw

Zinc Plated


Fillister Head

Phillips

Machine Screw

Zinc Plated


Oval Head

Phillips

Machine Screw

Zinc Plated


Pan Head

Phillips

Machine Screw

Zinc Plated


SIZES

40x1/8 thru 1/4-20x4

32x2 thru 1/4-20x4

32 thru 1/4-20

56x1/8 thru 1/2-13

56x1/8 thru 3/8-16

56x1/8 thru 1/4-20x1-1/2

56x1/8 thru 5/16-18x2

40x1/4 thru 1/4-20x3

56x1/8 thru 3/8-16x3

Round Head

Phillips

Machine Screw

Truss Head

Phillips

Machine Screw

Indented Hex

Washer Head

Phillips

Machine Screw

Binding Undercut

Slotted Head

Machine Screw

Flat Head

Slotted

Machine Screw

Undercut

Flat Head

Slotted

Machine Screw

Fillister Head

Slotted

Machine Screw

Oval Head

Slotted

Machine Screw

Pan Head

Slotted

Machine Screw

Round Head

Slotted

Machine Screw

Round Head

Phillips

Machine Screw

Zinc Plated


Truss Head

Phillips

Machine Screw

Zinc Plated


Indented Hex

Washer Head

Phillips

Machine Screw

Zinc Plated


Binding Undercut

Slotted Head

Machine Screw

Zinc Plated


Flat Head

Slotted

Machine Screw

Zinc Plated


Undercut

Flat Head

Slotted

Machine Screw

Zinc Plated


Fillister Head

Slotted

Machine Screw

Zinc Plated


Oval Head

Slotted

Machine Screw

Zinc Plated


Pan Head

Slotted

Machine Screw

Zinc Plated


Round Head

Slotted

Machine Screw

Zinc Plated


56x1/4 thru 3/8-16

40x3/16 thru 3/8-16x2-1/4

40x1/4 thru 1/4-20x1

56x1/8 thru 1/4-20x1-1/4

56x1/8 thru 1/2-13x6

56x1/8 thru 3/8-16x1/2

56x1/8 thru 3/8-16x1-1/4

40x1/4 thru 1/4-20x2

56x1/8 thru 3/8-16x3

56x1/8 thru 1/2-13x6

Truss Head

Slotted

Machine Screw

Indented

Hex Head

Slotted

Machine Screw

Indented

Hex Head

Unslotted

Machine Screw

Indented

Hex Washer

Slotted

Grounding Screw

Indented

Hex Washer

Slotted

Grounding Screw

Indented

Hex Washer

Slotted

Machine Screw

Indented

Hex Washer

Unslotted

Machine Screw

Flat Head

Torx® Drive

Machine Screw

Pan Head

Torx® Drive

Machine Screw

Pan Head

Phillips

Shakeproof®

Square Cone® Washer

Sems Machine Screw

Truss Head

Slotted

Machine Screw

Zinc Plated


Indented

Hex Head

Slotted

Machine Screw

Zinc Plated


Indented

Hex Head

Unslotted

Machine Screw

Zinc Plated


Indented

Hex Washer

Slotted

Grounding Screw

Green

Zinc Plated

Steel 10-32x3/8 and 10

Indented

Hex Washer

Slotted

Grounding Screw

Zinc Plated


Indented

Hex Washer

Slotted

Machine Screw

Zinc Plated


Indented

Hex Washer

Unslotted

Machine Screw

Zinc Plated


Flat Head

Torx® Drive

Machine Screw

Zinc Plated


Pan Head

Torx® Drive

Machine Screw

Zinc Plated


Pan Head

Phillips

Shakeproof®

Square Cone® Washer

Sems Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

4-40x1/4 thru 10

40x1/4 thru 1/2-13

40x1/4 thru 3/8-16

40x1/4 thru 3/8-16

32x3/8 and 10-32x1/2

40x1/4 thru 3/8-16x2-1/2

40x1/4 thru 3/8-16x2-1/2

40x1/4 thru 3/8-16x2

40x1/4 thru 1/4-20x2

56x3/16 thru 1/4-20x2

40x1/4 thru 10-32x3/4

Pan Head

Phillips

Split Lock Washer

Sems Machine Screw

Pan Head

Phillips

External Sems

Machine Screw

Pan Head

Phillips

Internal Sems

Machine Screw

Pan Head

Slotted

External Sems

Machine Screw

Pan Head

Slotted

Internal Sems

Machine Screw

Flat Head

Phillips

Machine Screw

Pan Head

Phillips

Machine Screw

Pan Head

Phillips

Split Lock Washer

Sems Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

4-40x1/4 thru 1/4

Pan Head

Phillips

External Sems

Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

4-40x3/16 thru 1/4

Pan Head

Phillips

Internal Sems

Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

23-56x1/8 thru 1/4

Pan Head

Slotted

External Sems

Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

4-40x3/16 thru 1/4

Pan Head

Slotted

Internal Sems

Machine Screw

Screw is

Zinc Plated

Steel

Baked After

Plating

4-40x1/4 thru 10

Flat Head

Phillips

Machine Screw

Black Oxide

Plated


Pan Head

Phillips

Machine Screw

Black Oxide

Plated


Sources for documentation

Smith Fasteners

40x1/4 thru 1/4-20

40x3/16 thru 1/4-20x1-1/4

56x1/8 thru 1/4-20x1

40x3/16 thru 1/4-20x1-1/4

40x1/4 thru 10-32x1

56x1/8 thru 1/4-20x2

56x1/8 thru 1/4-20x2

screw constructional dimension tables

Documents