1/4 -28 x 1/2 Black Chrome Button Head Socket Cap Screws (10 pcs.)

Diameter: 1/4 Length: 1/2 Material: Steel Finish: Black Chrome Head Style: Button (5/32 Socket) Thread Size: 28 (Fine) Thread Length: Full 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.