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Unit:inch

Hexagon Socket Head Shoulder Screws

ASME B 18.3 - 2003 (R2008)

Display drawing:

美标ASME B18.3 - 2003 (R2008) ASME18.3 18. Hexagon Socket Head Shoulder Screws
For thread diameter
1/4 5/16 3/8 1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2
ds max
min
dk max
min
k max
min
s Nominal Size
t min
d Nominal Size
Nominal Diameter
PP Threads per in.
b thread length
0.248 0.3105 0.373 0.498 0.623 0.748 0.998 1.248 1.498 1.748 1.998
0.246 0.3085 0.371 0.496 0.621 0.746 0.996 1.246 1.496 1.746 1.996
0.375 0.438 0.562 0.750 0.875 1.000 1.312 1.750 2.125 2.375 2.750
0.357 0.419 0.543 0.729 0.853 0.977 1.287 1.723 2.095 2.345 2.720
0.188 0.219 0.250 0.312 0.375 0.500 0.625 0.750 1.000 1.125 1.250
0.177 0.209 0.240 0.302 0.365 0.490 0.610 0.735 0.980 1.105 1.230
0.125 0.156 0.188 0.250 0.312 0.375 0.500 0.625 0.875 1.000 1.250
0.094 0.117 0.141 0.188 0.234 0.281 0.375 0.469 0.656 0.750 0.937
10# 1/4 1/3 3/8 1/2 5/8 3/4 7/8 1 1/8 1 1/4 1 1/2
0.1900 0.2500 0.3125 0.3750 0.5000 0.6250 0.7500 0.8750 1.1250 1.2500 1.5000
24 20 18 16 13 11 10 9 7 7 6
0.375 0.438 0.500 0.625 0.750 0.875 1.000 1.125 1.500 1.750 2.000

Alternative history

ASME B 18.3 - 2003(R2008) ASME B 18.3 - 2012

Similar Standards

1 Hexagon Socket Head Shoulder Screws [ISO]
ISO 7379 - 1983 		Hexagon Socket Head Shoulder Screws

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2 Hexagon Socket Head Shoulder Screws [ASME]
ASME B 18.3 - 2012 		Hexagon Socket Head Shoulder Screws

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3 Hexagon Socket Head Shoulder Screws (Metric Series) [ASME/ANSI]
ASME/ANSI B 18.3.3M - 1993 		Hexagon Socket Head Shoulder Screws (Metric Series)
4 Hexagon Socket Head Shoulder Screw For Press Tools [DIN]
DIN 9841 - 2017 		Hexagon Socket Head Shoulder Screw For Press Tools
5 Tools for pressing and moulding - Fasteners - Shouldered retaining screws [NF]
NF E 27-191 (1021) 		Tools for pressing and moulding - Fasteners - Shouldered retaining screws
6 Hexagon Socket Cheese Head Shoulder Screws - Unite And BSW/BSF Thread [BS]
BS 2470 - 1973 		Hexagon Socket Cheese Head Shoulder Screws - Unite And BSW/BSF Thread
7 Metric Socket Hexagon Cheese Head Screws With Shoulder [BS]
BS 4168-7 - 1982 		Metric Socket Hexagon Cheese Head Screws With Shoulder
8 Tools for pressing and moulding - Fasteners - Shouldered retaining screws - Stainless steel [NF]
NF E 27-191 (1031) 		Tools for pressing and moulding - Fasteners - Shouldered retaining screws - Stainless steel
9 Hexagon Socket Head Shoulder Screws [JIS]
JIS B 1175 - 1988 		Hexagon Socket Head Shoulder Screws
10 Hexagon Socket Head Shoulder Screws [GB]
GB 5281 - 1985 		Hexagon Socket Head Shoulder Screws