1/4 x 3 1/2 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert provides a defined shoulder for controlled movement, accurate positioning, and serviceable fixture design. Unlike a standard socket head cap screw, the unthreaded shoulder is the working surface for bearing contact, location, or controlled travel. Typical applications include tool and die work, mold-related fixtures, guide mechanisms, and service parts. 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. Alloy steel construction supports industrial fastening applications where the shoulder performs the working role in the assembly. 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.