Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6X734220K found under Hose by Rockwell International Corp. The National Stock Number assigned to this part is 4720009153749, 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 6X734220K.