Shoulder screws, or shoulder bolts, consist of a threaded section, and unthreaded 'shoulder', and a screw or bolt head. Shoulder screws are often used in applications requiring precise alignment. Automotion Components provide a wide range of shoulder screws in steel and two grades of stainless steel (AISI 303 & 316). We also make special screws to customer drawings. We also manufacture a special vented shoulder screw for vacuum applications etc - see our 'Threaded Insert & Specialist Screws' section.