5-40 x 7/8 Alloy Steel Socket Head Cap Screw helps maintenance and engineering teams source an alloy steel internal-hex screw with verified head-size data. The 5-40 thread and 7/8 in. length support bill-of-material consistency in high-clamping-force joints. Applications often include manufacturing plants, industrial facilities, and automation systems, especially where counterbored or close-clearance mounting is required. 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: 5-40 Length: 7/8 in. Nominal Body Diameter: .125 in. Head Diameter: 0.198 in. min / 0.205 in. max Head Height: 0.121 in. min / 0.125 in. max Hex Key Size: 3/32 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.