1/4 x 3/8 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert is frequently selected where dies, fixtures, cams, or linkages require a shoulder surface for repeatable motion. Engineers use this style when ordinary clamping hardware would not provide the guide, pivot, spacer, or stop function required. Typical applications include press tooling, guided plate movement, stop blocks, and linkage assemblies. The insert feature gives buyers a nylon-insert shoulder screw option for applications where retention matters alongside guided movement. Tool and die shops often evaluate this family when stripper plate travel or fixture alignment depends on a consistent shoulder surface. As a stripper bolt, it can support tooling and guided-motion applications where the shoulder is part of the operating interface. 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.