5/16"-18 x 1-1/4" Black Chrome Smooth Socket Cap Screws (6 pcs.)

Diameter: 5/16"
Length: 1-1/4"
Material: Steel
Finish: Black Chrome
Head Style: Smooth Socket (1/4" Socket)
Thread Size: 18 (Coarse)
Thread Length: Full
Type: Socket Cap Screw

Box of 6.

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.