Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4597 PIECE 20 found under Motor Alternating Current by F W Lang Co. The National Stock Number assigned to this part is 6105011445812, 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 4597 PIECE 20.