Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12420572-004 found under Tubing Nonmetallic by Bae Systems Land And Armaments L P. The National Stock Number assigned to this part is 4720004434746, 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 12420572-004.