Rear Hub Bolt for Volvo Material:35Crmo/40Cr/45# Finishing:Phosphate/Dacromet/Zinc Plated ... bolts,such as Volvo,Benz,Nissan,Hino,Fuso,Isuzu,BPW,York,Scania,etc. Rear Hub Bolt & Nut for Volvo(20X130) Material:40CrGrade:10.9Surface Finishing ... .Volume of Production: we have three wire-mesh belt furnaces for heat-treatment,so we can produce almost 30,000 pcs ...