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UNC Socket Head Cap Screws ASME B18. 3-2003 3/8 inch in A4 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw, socket head cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ASME/ANSI B18. 3, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination.
Image of UNC Socket Head Cap Screws ASME B18. 3-2003 in A4 image
technical drawing of UNC Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 3/8
dk head diameter 0.562
k head height 0.375
t recess depth 0.182
s drive size 5/16
b minimum thread length 1.25-1.94
Standard ASME B18.3-2003,ASTM F837-13e1(CW)
Material A4 Stainless Steel
all dimensions in millimetres (mm)
datasheet
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technical drawing of UNC Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 3/8
dk head diameter 0.562
k head height 0.375
t recess depth 0.182
s drive size 5/16
b minimum thread length 1.25-1.94
Standard ASME B18.3-2003,ASTM F837-13e1(CW)
Material A4 Stainless Steel
all dimensions in millimetres (mm)
datasheet