Back Home / Fasteners / Nuts / HEX NUT UNF ZINC 1/2″-20 GR 8 HEX NUT UNF ZINC 1/2″-20 GR 8 SKU: 8N1220 Categories: Fasteners, Nuts A finished hex nut made from low carbon steel. For use with grade 8 bolts. Proof load: 150,000 psi. Size: 1/2″-20. Yellow zinc plated. Case Quantity: 50 Log In For Pricing