7/16"-20 Socket Head Cap Screw, Zinc Plated Steel, 1-1/4 in Length, 6 PK, Midwest Fastener, Mfr#: 32863

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.