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This 3/8-16 bright/uncoated waxed finish Hex Locknut made from high quality grade L9 steel is specifically designed with a distorted thread design to prevent loosening. Suitable for most industrial and hardware applications, this lock nut provides strong retention against vibration or rotational movement without the need for lockwiring. Available in 3/8-16 size, it can be used in combination with screws that have hexagonal shaped heads for quick tightening. Ideal for use where safety and reliability are critical such as in automotive industries or heavy machinery applications to prevent accidental loosening during operation.