7/8"-9 x 4‑1/2" Heavy Hex Cap Screw – A307 Grade B, Coarse Thread (PT), Zinc CR+3 (U.S.A.)

Heavy‑duty 7/8"-9 x 4‑1/2" A307 Grade B heavy hex cap screw, manufactured in the U.S.A. and finished with a high‑quality Zinc CR+3 coating for enhanced corrosion resistance and long‑term durability in demanding environments. Features partial coarse threading (PT) for increased shear strength and secure load engagement, paired with a heavy hex head offering greater wrenching area and superior load distribution. Ideal for construction, structural connections, industrial machinery, anchoring applications, and any installation requiring strong, reliable hardware with added corrosion protection.