Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V2050ST found under Hose Air Duct Air Breathing by E D Bullard Company. The National Stock Number assigned to this part is 4240013642931, 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 V2050ST.