1/4 x 3 3/4 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert is commonly specified where a shoulder must guide, locate, or support a moving component instead of acting only as a clamp. This stripper bolt format is chosen when a mating part must ride, pivot, stop, or space against the shoulder. Typical applications include dies, stripper plates, tooling nests, and fixture rebuilds. The insert feature gives buyers a nylon-insert shoulder screw option for applications where retention matters alongside guided movement. Machine builders can use the internal hex drive and shoulder geometry in compact assemblies that still require service access. 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.