Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FT-500-10 found under Fume Exhauster Swing Arc by Donaldson Co Inc. The National Stock Number assigned to this part is 4460010434581, 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 FT-500-10.