1/4"-20 Socket Head Cap screws. These are made from Alloy Steel with Thermal Black Oxide coating.
Thread Size: 20 TPI - Coarse (Standard) Thread
Length: Please select from menu above.
Type: Socket Head Cap Screw
Matching Nut & Washer: 1/4-20 - Available here
System of Measurement: U.S. / Inch
Material: Alloy Steel with Thermal Black Oxide
Specifications: ANSI/ASME B18.3, ASTM A574