5/8 x 4 1/4 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert offers a practical solution when tooling or machine components need both socket-drive retention and a functional shoulder. The socket head allows internal hex drive access, while the shoulder provides the surface used by the assembly. Typical applications include conveyor equipment, assembly fixtures, spacer locations, and controlled-travel mechanisms. For maintenance teams, the nylon insert can help address loosening concerns in equipment subject to vibration or repeated motion. Repair technicians may source this part for replacement applications where motion control and retention both matter. 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.