Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 72601 71 found under Canister Gas Mask by Avon Protection Systems Inc. The National Stock Number assigned to this part is 4240015660874, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 72601 71.