Back Home / Fasteners / Bolts / HEX CAP SCREW BOLT UNC ZINC 5/16″-18 X 4-1/2″, GR 5 HEX CAP SCREW BOLT UNC ZINC 5/16″-18 X 4-1/2″, GR 5 SKU: 56X412C Categories: Bolts, Fasteners Made from medium carbon steel. Heat treated. Tensile strength: 120,000 psi. minimum. Zinc plated. Unified screw threads :UNC. Diameter: 5/16″-18. Length: 4-1/2″. Made from medium carbon steel. Heat treated. Tensile strength: 120,000 psi. minimum. Zinc plated. Unified screw threads :UNC. Diameter: 5/16″-18. Leng Case Quantity: 50 Log In For Pricing