#2-56 Button Head Socket Cap screws. These are made from Alloy Steel with Thermal Black Oxide coating.
Thread Size: 56 TPI - Coarse (Standard) Thread
Length: Please select from above.
Type: Button Head Cap Screw
Matching Nut & Washers: #2-56 - Available here
System of Measurement: U.S. / Inch
Material: Alloy Steel with Thermal Black Oxide
Specifications: ANSI/ASME B18.3, ASTM F879