Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5020173-001 found under Indicator Mechanism by Thales Training And Simulation Ltd. The National Stock Number assigned to this part is 6610001331870, and the Federal Supply Class is 6610 Flight Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5020173-001.