M12 x 40 Alloy Steel Metric Socket Head Shoulder Screw (Stripper Bolt) helps machine builders specify hardware that fastens while also supporting a controlled interface between moving components. The Stripper Bolt design separates the locating or bearing function from the threaded retention point, which helps maintain alignment in moving assemblies. Common uses include positioning assemblies, fixture construction, guided-motion assemblies, and machine building; related sourcing may also include metric tooling. Purchasing managers benefit from a clear size callout that separates the two shoulder dimensions for RFQ sourcing. This product family is appropriate where the fastener is part of the positioning system, not just a clamping point. It can also support guide mechanisms, fixture stops, and replacement maintenance where a consistent shoulder surface is part of the design. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.