Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17C059-4-7 found under Desiccant Pack by Flextron Industries Inc. The National Stock Number assigned to this part is 4440015325147, 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 17C059-4-7.