5/8"-11 x 2‑1/4" Heavy Hex Cap Screw – A307 Grade B, Coarse Thread (PT), Zinc CR+3 (U.S.A.)

High‑strength 5/8"-11 x 2‑1/4" A307 Grade B heavy hex cap screw, manufactured in the U.S.A. and finished with a Zinc CR+3 coating for improved corrosion resistance and long‑term durability in demanding environments. Features partial coarse threading (PT) for enhanced shear strength and secure load engagement, along with a heavy hex head that provides increased wrenching area and superior load distribution. Ideal for structural connections, construction projects, anchoring, equipment assembly, and any application requiring reliable, high‑strength hardware with added corrosion protection.