Every lug nut is through-hardened and tempered, reaching the depth of hardness needed for its unsurpassed level of safety (unlike case hardening which is only a surface treatment).

What material are wheel studs?

The process of making a wheel stud is a lot like the process of manufacturing a bolt. Wheel studs are often constructed using forged steel blanks that are then threaded externally to receive a lug nut.

Can you break a wheel stud?

When one or more wheel stud breaks, it puts more stress and load on the remaining wheel studs and wheel bearing. Each wheel stud is designed to hold a certain amount of pressure and load before breaking. The main cause of a stud failure is due to rust, improper torque, over-torquing, or strip studs.