1/2 x 1 1/4 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert helps locate or guide moving parts in equipment where alignment and controlled travel are part of the design. This stripper bolt format is chosen when a mating part must ride, pivot, stop, or space against the shoulder. Typical applications include dies, stripper plates, tooling nests, and fixture rebuilds. The nylon insert adds resistance to loosening in vibration-prone or movement-related assemblies without changing the basic shoulder function. Purchasing managers get a clear shoulder-size callout for RFQ sourcing and replacement work. This product family helps support controlled movement in fixtures, guides, pivots, and stops. 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.