|Product name: Conical Washer With Serration NFE25-511
Using the same concept of the Disc Spring, the Serrated Safety Washer has the special feature of radial serrations on both surfaces. When tightened to near capacity these serrations bite into the mating surfaces , thus preventing the loosening of the screw due to vibration and other similar circumstances. Serrated Safety Washers offer a reduction in the outside dia thus corresponding with most screw head sizes, particulary hexagonal socket type screws.
|For Screw||d1||d2||e||Hi max||Hi min||# of knurls|