Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-54949 found under Piston Pump by Us Jack Company. The National Stock Number assigned to this part is 4320013884677, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2-54949.