... strength(LBS): 600,Torgue Strength(FT LBS):10, Voltage withstand(KV):10,screw(mm):8,weight(G):504. SM-40Tensile strength(LBS): 650 ... ,Torgue Strength(FT LBS):10, Voltage withstand(KV):12,screw(mm):8,weight(G):865. SM-45Tensile strength(LBS): 1000 ... Strength(FT LBS):40, Voltage withstand(KV):25,screw(mm):10, Weight (G):1708. SM-76Tensile strength(LBS): 1500 Torque Strength(FT ...