5/16″-24 x 2-3/4″ Zinc Grade 5 Hex Cap Screws (8 pcs.)
Diameter: 5/16″ Length: 2-3/4″ Material: Steel Finish: Zinc Head Style: Hex (1/2″ Wrench) Thread Size: 24 (Fine) Thread Length: 7/8″ Hardness: Grade 5 Type: Cap Screw Box of 8. A hex cap screw has a hexagonal head, designed to be driven by a wrench.