Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK 4030-SS found under Hose Assembly Nonme by Cummins Inc. The National Stock Number assigned to this part is 4720013129593, 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 AK 4030-SS.