6-40 x 1 Alloy Steel Socket Head Cap Screw is a socket head cap screw for buyers matching an exact thread and length to drawings, repair records, or stocked hardware. With a 6-40 thread and 1 in. length, it fits fixture clamps where size interchangeability matters. Common uses include industrial facilities, machine tools, and fixture design, where internal hex installation helps keep the joint accessible. Internal hex drive access helps installation in compact assemblies, guards, housings, and fixture plates. The combination of product name, size, material, and verified head data improves search clarity for engineers and buyers. Technical Highlights Material: Alloy Steel Thread: 6-40 Length: 1 in. Nominal Body Diameter: .138 in. Head Diameter: 0.218 in. min / 0.226 in. max Head Height: 0.134 in. min / 0.138 in. max Hex Key Size: 7/64 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.