3/4 x 3 1/2 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. The shoulder screw design separates the functional bearing or locating surface from the threaded retention point. Typical applications include material-handling systems, transfer equipment, moving plates, and plant maintenance work. The nylon insert supports resistance to loosening while the shoulder continues to provide the bearing, guide, spacer, or locating surface. OEM manufacturers may specify this part where a defined shoulder supports repeatable assembly motion and controlled component location. The design is useful when the fastener is part of the positioning system rather than only a threaded clamping point. 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.