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

Heavy‑duty 7/8"-9 x 4" A307 Grade B heavy hex cap screw, proudly manufactured in the U.S.A. and finished with a durable Zinc CR+3 coating for enhanced corrosion resistance and long‑lasting performance in demanding conditions. Features partial coarse threading (PT) for improved 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 projects, industrial equipment assembly, anchoring applications, and any installation requiring strong, reliable hardware with added corrosion protection.