Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ADH3-COM-17479 found under Dehydrator Unit Nonreactivating by Environmental Technology Inc. The National Stock Number assigned to this part is 4440014703818, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ADH3-COM-17479.