3/8 x 2 1/2 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert provides a defined shoulder for controlled movement, accurate positioning, and serviceable fixture design. This stripper bolt format is chosen when a mating part must ride, pivot, stop, or space against the shoulder. Typical applications include material-handling systems, transfer equipment, moving plates, and plant maintenance work. The nylon insert supports resistance to loosening while the shoulder continues to provide the bearing, guide, spacer, or locating surface. Engineers can use the shoulder-size pair to match the bearing surface and travel requirement without changing the dimensional convention. The socket head shoulder screw format is well suited to serviceable machinery where access and repeatable location are both important. Common sourcing contexts include replacement maintenance, fixture construction, and OEM production support. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.