Cap Screws Flat Socket 316 Stainless 4-40 x 5/16 are precision-built fasteners designed for secure, flush-mounted support in demanding environments. The flat socket head provides a clean, low-profile appearance while delivering reliable torque as you tighten.

• Material: 316 stainless steel for outstanding corrosion resistance and durability.
• Size: 4-40 thread diameter with a 5/16″ length.
• Drive: Flat socket drive (Allen) for a recessed, streamlined finish.
• Application: Ideal for electronics, machinery, cabinetry, and marine or industrial assemblies where corrosion resistance and a compact fastener are needed.

Whether you’re outfitting a new build or replacing worn hardware, these cap screws combine performance with longevity for dependable holding power in a range of environments.