1/4-28 x 5/16 316 Stainless Steel Flat Head Socket Cap Screw provides a recessed fastening solution for designs that require a clean surface and corrosion-resistant stainless hardware. Flush mounting is valuable where machinery guards, enclosure doors, or instrument panels need a low-obstruction exterior. The corrosion-resistant construction supports use in processing equipment where frequent cleaning can challenge ordinary hardware. Internal hex drive access is useful in compact equipment where a clean outside face still needs secure tightening. Common uses include equipment panels, machine covers, inspection covers, and electrical enclosures. OEM manufacturers can document the exact size while keeping stainless flat head hardware consistent across builds. The size-specific listing helps reduce back-and-forth during quoting and replenishment. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.