1/4"-20 x 3‑1/2" Stainless Steel 316 Hex Cap Screw, Full Thread, UNC Coarse
Part Number: 399021
Manufactured from Type 316 stainless steel, the 1/4"-20 x 3‑1/2" UNC coarse‑thread hex cap screw is intended for long‑reach fastening applications where corrosion resistance and durability are critical. The full‑thread configuration provides continuous thread engagement across the entire length, ensuring consistent clamping force and secure performance in thick or multi‑layer assemblies. A standard hex head allows dependable torque application with common hand tools, supporting controlled and repeatable installation. Commonly used in marine hardware, chemical processing equipment, food‑grade systems, and outdoor industrial installations, this fastener delivers reliable strength and extended service life in environments exposed to moisture, chemicals, or corrosive conditions.
Specifications 399021
- Size Pitch: 1/4"-20
- Length: 3 1/2"