5/16 x 3/4 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert is frequently selected where dies, fixtures, cams, or linkages require a shoulder surface for repeatable motion. The shoulder screw design separates the functional bearing or locating surface from the threaded retention point. Typical applications include conveyor equipment, assembly fixtures, spacer locations, and controlled-travel mechanisms. The nylon insert supports resistance to loosening while the shoulder continues to provide the bearing, guide, spacer, or locating surface. Purchasing managers get a clear shoulder-size callout for RFQ sourcing and replacement work. Selection should follow the required shoulder diameter, shoulder length, material, and assembly function shown for the part. Common sourcing contexts include replacement maintenance, fixture construction, and OEM production support. It is appropriate for buyers comparing shoulder screws by exact shoulder diameter, shoulder length, material, and insert feature. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.