Back Home / Fasteners / Bolts / HEX CAP SCREW BOLT UNF ZINC 5/8″-18 X 6″, GR 8 HEX CAP SCREW BOLT UNF ZINC 5/8″-18 X 6″, GR 8 SKU: 58X6F8 Categories: Bolts, Fasteners Made from medium carbon alloy steel. Heat treated. Tensile strength: 150,000 psi. minimum. Yellow zinc plated. Unified screw threads :UNF. Diameter: 5/8″-18. Length: 6″. Made from medium carbon alloy steel. Heat treated. Tensile strength: 150,000 psi. minimum. Yellow zinc plated. Unified screw threads :UNF. Diameter: 5/ Case Quantity: 25 Log In For Pricing