Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 504007 found under Armature Motor by Smith Otis A Mfg Co. The National Stock Number assigned to this part is 6105007414710, and the Federal Supply Class is 6105 Motors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 504007.