5/16″-18 x 1-1/4″ Chrome Grade 8 Knurled Socket Cap Screws (10 pcs.)
Diameter: 5/16″ Length: 1-1/4″ Material: Steel Finish: Chrome Head Style: Knurled Socket (1/4″ Socket) Thread Size: 18 (Coarse) Thread Length: Full Hardness: Grade 8 Type: Socket Cap Screw Box of 10. 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.