Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20484-31 found under Band Sealing by Flightline Electronics Inc. The National Stock Number assigned to this part is 6615003499455, and the Federal Supply Class is 6615 Automatic Pilot Mechanisms And Airborne Gyro Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20484-31.