3/8 in. x 3 in. Grade 5 Zinc Hex Cap Screw – 50 Count (Model 200147)

Engineered for superior strength and long‑lasting performance, this 3/8 in. x 3 in. Grade 5 Zinc Hex Cap Screw is the ideal choice for heavy‑duty fastening in construction, automotive, mechanical, agricultural, and industrial applications. Manufactured from medium‑carbon steel and hardened to Grade 5 standards, this bolt provides significantly higher tensile strength compared to standard Grade 2 fasteners—making it suitable for load‑bearing joints, machinery assembly, and demanding repair situations.

The hex‑head design allows easy installation using wrenches, sockets, or power drivers, while the precision‑cut coarse threading ensures strong engagement and stability under vibration or load stress. A durable zinc‑plated finish protects the fastener from rust and corrosion, helping it maintain reliable performance in indoor environments and sheltered outdoor conditions.

Supplied in a bulk 50‑count pack, this screw is ideal for contractors, fleet mechanics, maintenance departments, manufacturing operations, and anyone requiring consistent, high‑strength fastening hardware.