5/16"-18 x 7/8" Black Chrome Plated Steel Coarse Thread Smooth Socket Cap Screws

Diameter: 5/16"
Length: 7/8"
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 8.

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.