Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Q1-3E101-Q602 found under Meter Flow Rate Indicating by Matheson Gas Products Inc. The National Stock Number assigned to this part is 6680014398360, 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 Q1-3E101-Q602.