1/2"-13 x 4" Plain Steel Coarse Thread Socket Cap Screws SCSS-360 (4 pcs.)
Head Style: Socket (3/8" Socket)
Thread Size: 13 (Coarse)
Type: Socket Cap Screw
Box of 4.
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.