Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P51864-1 found under Control Assembly Pn by Westinghouse Air Brake Technologies. The National Stock Number assigned to this part is 2030000190587, and the Federal Supply Class is 2030 Deck Machine. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P51864-1.