Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4220-2920 found under Gauge Lf 30 300Psi by 200 Park Inc. The National Stock Number assigned to this part is 1710015199065, 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 4220-2920.