Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1E978F99 found under Tube Fuel by Chicago Pneumatic Tool Co. The National Stock Number assigned to this part is 4710007331346, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1E978F99.