Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B270770 found under Hose Assembly Nonme by British Aerospace Inc. The National Stock Number assigned to this part is 4720996036058, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B270770.