5/16″-18 x 3/4″ Nylon Plastic Coarse Thread Hex Cap Screws (10 pcs.)
Diameter: 5/16″ Length: 3/4″ Material: Nylon Head Style: Hex (1/2″ Wrench) Thread Size: 18 (Coarse) Thread Length: Full Type: Cap Screw Box of 10. A hex cap screw has a hexagonal head, designed to be driven by a wrench.