5/16"-18 x 4" Stainless Steel 316 Hex Cap Screw, Full Thread, UNC Coarse

Manufactured from Type 316 stainless steel, the 5/16"-18 x 4" UNC coarse‑thread hex cap screw is intended for long‑length fastening applications that demand excellent corrosion resistance and reliable structural performance. The full‑thread configuration provides continuous thread engagement along the entire shank, ensuring consistent clamping force and secure joint integrity in thick materials or multi‑layer assemblies. A standard hex head allows dependable torque application with common hand tools, supporting accurate and repeatable installation. Frequently used in marine hardware, chemical processing equipment, food‑grade systems, and outdoor industrial assemblies, this fastener delivers long service life and dependable strength in environments exposed to moisture, chemicals, and corrosive conditions.