These High Performance Cylinder studs are made from 180,000 psi yield strength, fine grain, heat treated, premium grade 8740 material
Threads are rolled after heat treating to insure maximum compressive stresses are retained, insuring maximum strength, and the longest fatigue life possible
The case end threads are designed to have a slight interference fit to maintain good thread contact at high temperature
Studs are center less ground to insure concentricity, and finished with a premium black oxide treatment , excellent appearance
