Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CBB9-7 found under Shaft Transmission Pump by Waukesha Foundry Inc. The National Stock Number assigned to this part is 4320004718548, 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 CBB9-7.