M20 x 120 Alloy Steel Metric Socket Head Shoulder Screw (Stripper Bolt) is commonly specified when a metric assembly needs a controlled bearing surface for pivots, guides, spacers, or locating points. This format is different from standard socket head cap screws because the shoulder is intended to carry the locating or motion-control role. Common uses include precision manufacturing systems, die maintenance, transfer equipment, and robotic end-of-arm tooling; related sourcing may also include industrial robotics. Maintenance professionals can use the metric shoulder format when worn guide, pivot, spacer, or stop hardware needs direct replacement. 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.