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

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