Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0647021 found under Hose Assembly Nonmetallic by Intrupa Mfg Co. The National Stock Number assigned to this part is 4720000647021, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 0647021.