Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51184-30 found under Hose Air Duct by Porter H K Co Inc. The National Stock Number assigned to this part is 4720005641413, 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 51184-30.