4-40 x 1 1/2 18-8 Stainless Steel Socket Head Cap Screw is used where drawings call for a socket head cap screw that combines stainless construction with a cylindrical head profile. 18-8 stainless steel is commonly selected for general corrosion resistance in indoor equipment, protected outdoor equipment, and high-humidity work areas. The socket head form gives designers a compact bearing surface while preserving drive access for installation and service. Typical placements include agricultural equipment, outdoor hardware, and general manufacturing where general corrosion resistance and internal-hex access are useful. Industrial distributors can support customers who need a size-specific 18-8 stainless socket head cap screw for repair work. Technical Highlights: Material: 18-8 Stainless Steel; Thread: 4-40 UNC; Length: 1 1/2 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.