1415573 is a part number from Bossard, a manufacturer and supplier of industrial fasteners and components. The part is a threaded nut from the Fastener & Component Solutions product line. The specific type of nut is a Double Coating NBR Brass Insert Nut, which is a hex-shaped nut featuring an outer coating of nitrile rubber and an inner brass insert. This part is designed to hold two mating components together, such as two plates, providing a strong, durable connection. Other features of this nut include a black finish, an M6 thread size, a head size of 6.2mm, and a body diameter of 11.5mm.