Two-Piece Wedge Lock Washers, also known the trade name NORD-LOCK® Washers, are two-piece washersets that provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting. Wedge lock washers are reusable.
are available on the FCH Network with Imperial/US diameters that range from #1 to 5 and with Metric diameters that range from M1 to M48. The length of is usually measured from the point to the underside of the head.