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

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