Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 472-3018-0909-OD-AC found under Chest Medical Instr by Hardigg Industries Inc. The National Stock Number assigned to this part is 6545015191087, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 472-3018-0909-OD-AC.