Bolts:10.9/12.9 Class, minimum tensile strength 170,000 psi.covering Hino,caterpillar,Mitsubishi,Fuso,Benz,Volvo, ... ’ drawings or samples.Machanism Capability: Bolts:10.9 Class, minimum tensile strength 170,000 psi.Nuts:M12-M33 ,10 Class, Hardness: HRC26 ... to match bolt strengthWe also produce 12.9 class high tensile fasteners by forging. Material:S45/40Cr.Surface:Black oxide, Blue ...