Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UM90 found under Cover Electrical Tr by Microtran Co Inc. The National Stock Number assigned to this part is 5950005024988, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like UM90.