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

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