Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A73 2477 3 found under Guard Switch by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 5930013612461, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A73 2477 3.