5/16"-18 x 3" Hex Cap Screw – Coarse Thread (FT), 651 Silicon Bronze (USA, Inch)

High‑quality 5/16"-18 x 3" hex cap screw, manufactured in the USA from premium 651 silicon bronze for exceptional corrosion resistance, excellent mechanical strength, and long‑lasting durability. Features full coarse threading (FT) for strong, reliable thread engagement, combined with a precision‑machined hex head that ensures secure wrenching grip and dependable fastening. Ideal for marine environments, electrical systems, woodworking, architectural hardware, and any application requiring non‑magnetic, highly corrosion‑resistant bronze fasteners with extended grip length.