Shoulder Screws

A shoulder screw, or shoulder bolt, is a specialized fastener characterized by its three distinct sections: a head, a precisely machined unthreaded cylindrical shoulder, and a threaded end. This unique design enables its use in applications requiring precise rotation, alignment, or spacing. The smooth, tightly toleranced shoulder acts as a bearing surface, reducing friction and wear, making it ideal for pivot points, guiding motion, and supporting machinery. Common applications include die stripper plates in metalworking, as well as the assembly of pulleys and gears. In essence, shoulder screws provide accurate alignment and smooth rotation, serving as both pivot points and bearing surfaces in various mechanical assemblies.