Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4M9996 found under Tube Assembly by Caterpillar Inc. The National Stock Number assigned to this part is 2610011480869, and the Federal Supply Class is 2610 Tires And Tubes Pneumatic Except Aircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4M9996.