Mettec offer two strength levels of bolts. Non-Heat Treated bolts are Min UTS 140,000psi and Heat Treated are Min UTS 160,000psi. We feel the heat treated high strength bolt performace is better and has stronger threads to reduce galling. Mettec bolts have forged heads and rolled threads. Kit includes the torsion arm bolts and the pitman arm pinch bolt. Kit contains the following parts 5ea T6NF03751875 Titanium Min UTS 160,000psi Hex Dimple 3/8-24 x 1-7/8"