Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MA499 found under Filter Screen by Marine And Industrial Transmissions Lt. The National Stock Number assigned to this part is 2940011370310, and the Federal Supply Class is 2940 Engine Air And Oil Filters Strainers And Cleaners Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MA499.