Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4300-412 found under Indicator Attitude by Mid Continent Instrument Co Inc. The National Stock Number assigned to this part is 6610015524956, 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 4300-412.