8.8 Grade M16x80mm Full Threaded Left Hand Thread Hex Head Bolt Black

Description: Made of carbon steel material,black oxide finish,hex head,left hand reverse thread design. Fixing component, industrial and construction fasteners. To tighten a reverse threaded screw, you turn it counter clockwise.To loosen a reverse threaded screw, you turn it clockwise. Used widely in home, office and factory appliance, communication equipments, ship assembly and other machinery industry.