5/16-18 x 5/8 18-8 Stainless Steel Socket Head Cap Screw fits production assemblies where engineers need socket engagement, dimensional clarity, and stainless material compatibility. This material is useful across production facilities where moisture, handling, and routine cleaning influence fastener selection. Internal-hex engagement gives engineering departments a familiar drive style for stainless machine components. Typical placements include processing equipment, power transmission guards, and production facilities where general corrosion resistance and internal-hex access are useful. Purchasing agents can source the specified stainless fastener without changing the approved product family. Technical Highlights: Material: 18-8 Stainless Steel; Thread: 5/16-18 UNC; Length: 5/8 in.; Nominal Body Diameter: 0.312 in.; Head Diameter: 0.469 in. max / 0.457 in. min; Head Height: 0.312 in. max / 0.306 in. min; Hex Key Size: 1/4; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.