3/8 x 4 3/4 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert provides a defined shoulder for controlled movement, accurate positioning, and serviceable fixture design. The important engineering feature is the shoulder, which supports positioning and movement while the threaded end retains the fastener. Typical applications include assembly equipment, pivoting components, locating nests, and serviceable machine designs. The insert feature gives buyers a nylon-insert shoulder screw option for applications where retention matters alongside guided movement. 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.