Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XA1550 138 found under Coil Assembly Electrical by Emerson Electric Co. The National Stock Number assigned to this part is 5950014409202, 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 XA1550 138.