Forged Steel - Quenched and Tempered. Hot Dip galvanized. Tapped with standard UNC class 2 threads after galvanizing. Crosby products meet or exceed all the requirements of ASME B30. 26 including identification, ductility, design factor, proof load and temperature requirements. Importantly, Crosby products meet other critical performance requirements inluding fatigue life, impact properties and material traceability, not addressed by ASME B30. 26.