PCS M2.5 M3 M4 M5 M6 M8 M10 M12 Push Nuts Internal Tooth Star Lock Washers 500
It uses spring pressure to regulate reinforced shaped objects and is used to tighten and loosen threaded fittings. Convenient Storage: Each of the 8 different sizes of push on locking washer are individually stowed by type in an easy to carry clear case.