... screw(mm):6, weight(G):282. SM-30Tensile strength(LBS): 550,Torgue Strength(FT LBS):8, Voltage withstand ... (KV):8,screw(mm):8, weight(G):443. SM-35Tensile ... (KV):12,screw(mm):8,weight(G):865. SM-45Tensile strength(LBS): 1000 Tongue Strength (FTLBS):20 ... withstand(KV):15Screw (mm):8,weight(G):706. SM-51Tensile strength(LBS): 1000, Tongue Strength(FT LBS ...