Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51517-1290 found under Transformer Power by Lucas Aerospace Power Equipment. The National Stock Number assigned to this part is 5950003977750, 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 51517-1290.