5/16-24 x 3/8 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. The exact 5/16-24 x 3/8 size helps buyers align the fastener with repair work tied to an existing fastener callout. The screw is useful across packaging machinery, precision assemblies, and tooling when a compact internal-hex fastener is required. 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: 5/16-24 Length: 3/8 in. Nominal Body Diameter: .312 in. Head Diameter: 0.457 in. min / 0.469 in. max Head Height: 0.306 in. min / 0.312 in. max Hex Key Size: 1/4 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.