1/4-20 x 4 Alloy Steel Socket Head Cap Screw gives engineers an internal-hex fastener for mechanical joints where socket engagement and dimensional consistency matter. For socket-drive service locations, the 1/4-20 thread and 4 in. length help confirm the correct socket cap screw before installation. It is frequently used in assembly equipment, power transmission, and industrial automation when socket engagement is preferred over external-wrench access. The dimensional highlights make the listing more useful for maintenance shops and industrial distribution teams. This exact size supports industrial hardware, repair, and production requirements. Technical Highlights Material: Alloy Steel Thread: 1/4-20 Length: 4 in. Nominal Body Diameter: .250 in. Head Diameter: 0.365 in. min / 0.375 in. max Head Height: 0.244 in. min / 0.250 in. max Hex Key Size: 3/16 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.