Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AF404-50 found under Hose Assembly Nonme by Scott Huber Essick A Co Of Figgi. The National Stock Number assigned to this part is 4720007657749, 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 AF404-50.