Back Home / Fasteners / Bolts / HEX CAP SCREW BOLT UNC ZINC 1/2″-13 X 3″, GR 5 HEX CAP SCREW BOLT UNC ZINC 1/2″-13 X 3″, GR 5 SKU: 12X3C Categories: Bolts, Fasteners Hex head cap screw with metric thread pitch made from medium carbon alloy steel. Heat treated. Tensile strength: 120,000 psi. minimum. Zinc plated. Unified screw threads :UNC. Diameter: 1/2″-13. Length: 3″. Case Quantity: 25 Log In For Pricing