Back Home / Fasteners / Bolts / HEX CAP SCREW BOLT UNC ZINC 1″-8 X 4-1/2″, GR 8 HEX CAP SCREW BOLT UNC ZINC 1″-8 X 4-1/2″, GR 8 SKU: 1X412C8 Categories: Bolts, Fasteners Made from medium carbon alloy steel. Heat treated. Tensile strength: 150,000 psi. minimum. Yellow zinc plated. Unified screw threads :UNC. Diameter: 1″-8. Length: 4-1/2″. Case Quantity: 10 Log In For Pricing