1/2"-20 x 3-1/2" Zinc Plated Steel Fine Thread Socket Cap Screws (3 pcs.)
Head Style: Socket (3/8" Socket)
Thread Size: 20 (Fine)
Type: Socket Cap Screw
Box of 3.
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.