Shoulder bolt is commonly used in applications where precise alignment and spacing are critical. Here are some examples of where shoulder bolts may be used:

1. Machinery and equipment: Shoulder bolts are often used in machinery and equipment such as robotics, automation, and conveyors. They can be used as pivot points, guide pins, or axle shafts, among other applications.

2. Automotive and aerospace: Shoulder bolts can be used in automotive and aerospace applications, such as in the suspension systems or engine components. They can also be used as hinge pins, actuator shafts, and in other applications that require precise alignment and rotation.

3. Furniture and cabinetry: Shoulder bolts can be used in furniture and cabinetry applications, such as in the assembly of drawers, doors, and hinges. They can also be used to create custom spacers or standoffs.

4. Electrical and electronic devices: Shoulder bolts can be used in electrical and electronic devices, such as in printed circuit board assemblies or in the assembly of mechanical components.