Bolts:10.9/12.9 Class, minimum tensile strength 170,000 psi. Nuts:M12-M33 ,10 Class, Hardness: HRC26- ... according to clients’ drawings or samples.Machanism Capability: Bolts:10.9/12.9 Class, minimum tensile strength ... 170,000 psi.Nuts:M12-M33 ,10 Class, Hardness: HRC26-36, ... 4323872,135-32-11211,4247132 manufacture forged bolts/Truck bolt for Hino, Mitsubishi,volvo