7 Key Facts About Shoulder Bolts That Engineers Should Keep in Mind [Infographic]

August 5, 2025

Shoulder bolts, also known as stripper bolts, are a unique fastener type with a cylindrical, unthreaded shoulder between the head and threads. This design enables them to serve as both a fastening and bearing surface in moving parts and precise assemblies. Commonly used in tooling, automotive components, and machinery, these bolts provide alignment and rotational support, making them invaluable in high-performance applications.

Understanding their function and specification is essential for engineers and product designers who demand accuracy and strength in their assemblies. With variations in material, shoulder length, and thread dimensions, shoulder bolts can be tailored to suit specialised needs.

Here’s an infographic covering seven key facts that every engineer should consider when working with or selecting shoulder bolts.

7 Key Facts About Shoulder Bolts That Engineers Should Keep in Mind