Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M20H5530520-511 found under Gasket by Dassault Aviation. The National Stock Number assigned to this part is 5330144543167, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M20H5530520-511.