Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A690 found under Feeder Volumetric by Wallace And Tiernan Canada Inc. The National Stock Number assigned to this part is 4610004123816, and the Federal Supply Class is 4610 Water Purification Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A690.