1"-8 x 4‑1/2" Heavy Hex Cap Screw – A307 Grade B, Coarse Thread (PT), Zinc CR+3 (U.S.A.)

Heavy‑duty 1"-8 x 4‑1/2" A307 Grade B heavy hex cap screw, manufactured in the U.S.A. and protected with a Zinc CR+3 coating for superior corrosion resistance and dependable long‑term performance. Features partial coarse threading (PT) for enhanced shear strength and secure load engagement, paired with a heavy hex head that provides increased wrenching area and excellent load distribution. Ideal for structural connections, construction projects, industrial equipment assembly, anchoring applications, and any use requiring rugged, high‑strength hardware with added corrosion protection.