1/4-28 x 5/8 316 Stainless Socket Head Cap Screw fits applications where engineers need a socket head cap screw that can be serviced with a hex key in compact stainless equipment. The material is appropriate for many salt-air, high-humidity, washdown, and chemical-adjacent service conditions. Hex-key installation helps technicians reach fastening points inside guards, covers, brackets, and fixtures. Typical placements include instrumentation panels, sensor mounts, and laboratory fixtures where stainless corrosion resistance and internal-hex access are practical. Engineering departments can evaluate head clearance, drive access, and material compatibility before releasing the assembly. Technical Highlights: Material: 316 Stainless Steel; Thread: 1/4-28 UNF; Length: 5/8 in.; Nominal Body Diameter: 0.250 in.; Head Diameter: 0.375 in. max / 0.365 in. min; Head Height: 0.250 in. max / 0.244 in. min; Hex Key Size: 3/16; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.