5/16 -18 x 2 Plain Steel Coarse Thread Socket Cap Screws SCSS-255

Diameter: 5/16 Length: 2 Material: Steel Finish: Plain Head Style: Socket (1/4 Socket) Thread Size: 18 (Coarse) Type: Socket Cap Screw A socket cap screw is a type of cap screw with a hexagonal recessed drive. A hex key is required to tighten or loosen a socket screw. Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.