UNC 3/8 (125 PCS) Stainless Steel Hex Bolts with Nut, Flat Washer and Lock Wa…
Fastener Type: Hex. About Hex Bolt Hex head cap screws are precision threaded fasteners with an External socket drive. Screw Head Style: Hex. External Hex Drive Size: 9/16″ Color: Silver Tone; Exterior Finish: Steel Finish, Plain Finish, no coating outside.