The anti-loosening nut is Hardlock's flagship product. The concave nut in the standard product has a rim with a stopper to greatly improve operability.Refer to the Hardlock nut with rim - options table for sizes and materials with rims.
We have fasteners over 700,000 SKU IN STOCK from M1 - M100 l Start from 1 pc l Ship from Japan to the world everyday
