3/8 x 6 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert provides a defined shoulder for controlled movement, accurate positioning, and serviceable fixture design. This stripper bolt format is chosen when a mating part must ride, pivot, stop, or space against the shoulder. Typical applications include tool and die work, mold-related fixtures, guide mechanisms, and service parts. The nylon insert supports resistance to loosening while the shoulder continues to provide the bearing, guide, spacer, or locating surface. Machine builders can use the internal hex drive and shoulder geometry in compact assemblies that still require service access. Selection should follow the required shoulder diameter, shoulder length, material, and assembly function shown for the part. It is appropriate for buyers comparing shoulder screws by exact shoulder diameter, shoulder length, material, and insert feature. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.