Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 691902 found under Plate Thrust Rotary Pump by Barnes John S Corp. The National Stock Number assigned to this part is 4320013171475, 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 691902.