Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E2-181D101 found under Chopper Electronic by Otis Elevator Co. The National Stock Number assigned to this part is 5945003274787, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E2-181D101.