Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H0-1 2 X 3 4-532 found under Flowmeter by Hoffer Flow Controls Inc. The National Stock Number assigned to this part is 6680010484526, 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 H0-1 2 X 3 4-532.