Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HFX40X50Y40S found under Hose Assembly Nonmetallic Fire F by All American Hose Llc. The National Stock Number assigned to this part is 4210012619725, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HFX40X50Y40S.