1/4 x 1/2 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. The important engineering feature is the shoulder, which supports positioning and movement while the threaded end retains the fastener. Typical applications include industrial machinery, maintenance departments, equipment builders, and distributor sourcing. For maintenance teams, the nylon insert can help address loosening concerns in equipment subject to vibration or repeated motion. Purchasing managers get a clear shoulder-size callout for RFQ sourcing and replacement work. The design is useful when the fastener is part of the positioning system rather than only a threaded clamping point. 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.