5/16 -18 x 2-1/2 Polished 18-8 Stainless Smooth Socket Cap Screws (3 pcs.)

Diameter: 5/16 Length: 2-1/2 Material: Stainless Steel Finish: Polished Head Style: Smooth Socket (1/4 Socket) Thread Size: 18 (Coarse) Thread Length: Partial Hardness: 18-8 Style: Smooth 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.