Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AH80989-211 found under Knob by Cooper Industries Inc. The National Stock Number assigned to this part is 5355002197323, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AH80989-211.