Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A181 22 found under Lamp Incandescent by Amphenol Socapex. The National Stock Number assigned to this part is 6240142227195, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A181 22.