4-40 x 2 1/4 316 Stainless Socket Head Cap Screw helps maintenance teams keep the specified stainless fastener family in service where corrosion-prone hardware is being replaced. The stainless alloy helps reduce corrosion concerns around moisture, cleaning solutions, and outdoor exposure. Hex-key installation helps technicians reach fastening points inside guards, covers, brackets, and fixtures. Typical placements include test stands, prototype fixtures, and engineering departments where stainless corrosion resistance and internal-hex access are practical. Purchasing agents can source the specified stainless fastener without changing the approved product family. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 2 1/4 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.