... :8.8-12.9 Certification:ISO9001:2008 ISO14001 Fasterner and Power bolt and NutWe focus on offering bucket teeth, adapters, blades ... ,cutting edge,end bits,power bolt and etc which applied to Construction Machinery (Excavator, dozer ... ♦End bit16Mn>=670Mpa>=320Mpa7%HB 280--320>=21J♦Power Bolt40Cr HB 380--420 ♦Power Nut45# HB 380--420 Witness of Forever Strength ...