3/8-16 x 2 1/4 316 Stainless Steel Flat Head Socket Cap Screw is well suited for stainless assemblies that require a clean countersunk seat and a compact internal drive. The flat head profile is useful where exposed screw heads would create clearance problems or trap residue. 316 stainless steel provides excellent corrosion resistance for marine equipment, coastal installations, and saltwater environments. A hex socket allows the screw to be tightened through the head while preserving the smooth countersunk form. The product suits coastal equipment, valve covers, OEM housings, and instrument panels where corrosion resistance matters. OEM manufacturers can document the exact size while keeping stainless flat head hardware consistent across builds. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.