5/16″-24 x 2-1/4″ Chrome Grade 5 Hex Cap Screws (10 pcs.)
Diameter: 5/16″ Length: 2-1/4″ Material: Steel Finish: Chrome Head Style: Hex (1/2″ Wrench) Thread Size: 24 (Fine) Thread Length: 1″ to 2″ Hardness: Grade 5 Type: Cap Screw Box of 10. A hex cap screw has a hexagonal head, designed to be driven by a wrench.