Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HH9664D20KNSBL found under Filter Fluid by Pall Industrial Hydraulics Corp. The National Stock Number assigned to this part is 2940015175733, 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 HH9664D20KNSBL.