Lock washers prevent bolts and nuts from turning or loosening from vibration and torque. Avialable in different styles such as a split washer, star washer, pyramidal-type lock washers, or dome-type lock washers, all achieve the same level of security in various applications. Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of lock washers for any application. Every part that we sell is in Factory new (FN) condition and we provide our company’s certificate of conformance for all parts on every order. See below for our products.