12-24 x 3 Alloy Steel Socket Head Cap Screw gives engineers an internal-hex fastener for mechanical joints where socket engagement and dimensional consistency matter. The exact 12-24 x 3 size helps buyers align the fastener with stockroom identification and purchasing review. Common uses include maintenance shops, precision assemblies, and maintenance repair, 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: 12-24 Length: 3 in. Nominal Body Diameter: .215 in. Head Diameter: 0.337 in. min / 0.344 in. max Head Height: 0.211 in. min / 0.215 in. max Hex Key Size: 5/32 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.