1/4-28 x 1/2 Alloy Steel Socket Head Cap Screw is specified when a machine assembly needs a high-strength alloy steel socket screw with predictable head and drive geometry. With a 1/4-28 thread and 1/2 in. length, it fits tooling plates where size interchangeability matters. Common uses include maintenance repair, tooling, and fixture design, where internal hex installation helps keep the joint accessible. Socket engagement helps technicians apply installation torque from above the head in constrained layouts. Those verified dimensions support counterbore checks, tool selection, and replacement fastener review. Technical Highlights Material: Alloy Steel Thread: 1/4-28 Length: 1/2 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.