Tensile specifications are 10,000 psi higher than industry standard - while maintaining the core hardness range. 

The ultimate in fastener traceability - from its original manufacturing lot, raw material chemistry to performance test results. 

This design change alone is responsible for doubling fatigue life at critical head-shank juncture.

Provides a smooth form that distributes stress and increases fatigue life of thread run-out as much as 300% in certain sizes.

A development that doubles the fatigue life compared to flat root thread forms. 

The flow lines of the material are continuous, resulting in increased strength, better installation ability, and a longer product life. 

Roll threading compresses the material’s grain flow and enhances fatigue resistance.