What is a jam nut?

A jam nut is a type of nut that is typically used in conjunction with another nut to secure an assembly in place. It is a low-profile nut that is designed to be tightened against a standard nut, locking it into position and preventing it from loosening.

Jam nuts are commonly used in situations where vibration or movement may cause a standard nut to become loose. By tightening a jam nut against the standard nut, the two nuts work together to create a secure and stable connection.

Jam nuts are available in a variety of sizes and materials, including steel, stainless steel, and brass. They are often used in automotive applications, machinery, and construction projects.