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

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