Back Home / Fasteners / Bolts / HEX CAP SCREW BOLT UNC ZINC 5/16″-18 X 3/4″, GR 5 HEX CAP SCREW BOLT UNC ZINC 5/16″-18 X 3/4″, GR 5 SKU: 56X34C 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: 3/4″. Case Quantity: 100 Log In For Pricing