Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27-370-20664 found under Locator Frame Fuel Tank by Hydromach Inc. The National Stock Number assigned to this part is 1560010604300, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 27-370-20664.