Spacers are used throughout the Aerospace industry to secure various products away from the aircraft strucure. Bushings are used in many applications to allow rotation of parts without the need for oil or greases. other Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of spacing and bushings. 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.