7/16-20 x 3 Alloy Steel Socket Head Cap Screw is suited to assemblies that need an alloy steel cap screw for clamp load, service access, and compact installation. This size keeps the specified 7/16-20 thread and 3 in. length visible for repair work tied to an existing fastener callout. Industrial buyers may specify it for material handling, power transmission, and production lines where head geometry and drive access need to be predictable. Verified head dimensions and hex key size help engineering departments check fit before ordering. Those verified dimensions support counterbore checks, tool selection, and replacement fastener review. Technical Highlights Material: Alloy Steel Thread: 7/16-20 Length: 3 in. Nominal Body Diameter: .437 in. Head Diameter: 0.642 in. min / 0.656 in. max Head Height: 0.430 in. min / 0.438 in. max Hex Key Size: 3/8 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.