3/8 -16 x 1-1/4 18-8 Stainless Socket Cap Screws SCSSSS-351 (4 pcs.)

Diameter: 3/8 Length: 1-1/4 Material: Stainless Steel Head Style: Socket (5/16 Socket) Thread Size: 16 (Coarse) Thread Length: Full Hardness: 18-8 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.