M16 x 40 Alloy Steel Metric Socket Head Shoulder Screw (Stripper Bolt) offers a practical solution when a fastener must also act as a bearing surface, stop, pivot, spacer, or guide. Unlike a standard socket head cap screw, this shoulder screw uses its unthreaded shoulder as the working surface while the threaded end retains the fastener. Common uses include production machinery, die sets, stripper plates, and fixture rebuilds; related sourcing may also include precision manufacturing systems. Purchasing managers benefit from a clear size callout that separates the two shoulder dimensions for RFQ sourcing. The shoulder can support controlled travel in fixtures, guides, pivots, and stops while the socket head allows accessible installation. 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.