Shoulder Bolt Application. The screws act as linear slides to accurately align the die or mold halves as they open or close. A simple application is attaching gears or wheels to a system.
Shoulder screws are often used in punch and die mechanisms or plastic injection mold sets. A custom shoulder bolt still falls into the commonly accepted 80 to 85 yield strength. The socket head enables high torque fastening with limited clearance.
Left hand threaded shoulder screws tighten these shoulder screws by turning them to the left.
Once fastened they resist loosening from counterclockwise motion. The screws act as linear slides to accurately align the die or mold halves as they open or close. Second problem the shoulder in shoulder bolts is a natural stress concentrator and is a likely fracture point. Shoulder bolts or shoulder screws have a long unthreaded cylindrical shoulder that allows for the rotation of attached parts like pulleys gears moving parts of engines and mechanical assemblies and rolling wheels.
