1/4-28 x 3 1/4 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. For guarding and housings, the 1/4-28 thread and 3 1/4 in. length help confirm the correct socket cap screw before installation. Industrial buyers may specify it for maintenance shops, processing equipment, and power transmission where head geometry and drive access need to be predictable. Socket engagement helps technicians apply installation torque from above the head in constrained layouts. This keeps the listing focused on the fastener geometry rather than broad catalog language. Technical Highlights Material: Alloy Steel Thread: 1/4-28 Length: 3 1/4 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.