2-56 x 1/2 Alloy Steel Socket Head Cap Screw gives engineers an internal-hex fastener for mechanical joints where socket engagement and dimensional consistency matter. This size keeps the specified 2-56 thread and 1/2 in. length visible for repair work tied to an existing fastener callout. Industrial buyers may specify it for precision assemblies, machine tools, and automation systems where head geometry and drive access need to be predictable. Verified head dimensions and hex key size help engineering departments check fit before ordering. The technical highlight block below retains the verified head diameter, head height, body diameter, and hex key data. Technical Highlights Material: Alloy Steel Thread: 2-56 Length: 1/2 in. Nominal Body Diameter: .086 in. Head Diameter: 0.134 in. min / 0.140 in. max Head Height: 0.083 in. min / 0.086 in. max Hex Key Size: 5/64 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.