A Metric Left Hand Nut is a six sided internally threaded fastener that has a thread that has been cut in the opposite direction of a regular hex nut. It is used in conjunction with a left hand externally threaded fastener such as a bolt or a threaded stud.
Left Hand Nuts
These hex nuts are called Left Hand Nuts because it needs to be turned to the left or counter clockwise to be tightened. Left Hand Nuts are used on equipment when a regular nut is likely to loosen during normal operation; most often because of the axially rotation of a motor.
Metric & Multistandard Components Corp. supplies DIN 934 Left Metric Hexagon Nuts in Property Class 8 and Stainless Steel. Hexagon Nuts-Dimensional Information
