Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VG1903-01-12 found under Indicator Airflow by Hiller Companies Inc The. The National Stock Number assigned to this part is 6350014793865, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like VG1903-01-12.