5/16 x 4 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 shoulder screw design separates the functional bearing or locating surface from the threaded retention point. Typical applications include fixture plates, sliding elements, guide rails, and repeatable locating features. The nylon insert is useful in assemblies where a shoulder screw or stripper bolt must stay seated while nearby components move or cycle. Industrial distributors can position this as a shoulder screw and stripper bolt option for tooling, fixture, and maintenance demand. 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. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.