US (Inch) 5/16"-18 screws with an allen key drive. Socket caps have a small cylindrical head with tall vertical sides. Socket drive is a six-sided recess for use with an allen wrench (hex key).
5/16-18 Socket Head Cap screws. These are made from Alloy Steel with Thermal Black Oxide coating.
Note: PT = Partial Thread
Diameter: 5/16
Thread Size: 18 TPI - Coarse (Standard) Thread
Length: Please select from menu above.
Drive: 1/4 Hex Key - Available here
Type: Socket Head Cap Screw
Matching Nut & Washer: 5/16-18 - Available here
System of Measurement: U.S. / Inch
Material: Alloy Steel with Thermal Black Oxide
Specifications: ANSI/ASME B18.3, ASTM A574
Socket Head Cap Screws, also called allen screws, are used in many fastening applications. These screws are made to the ASME B18.3, 1936 Series
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