Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11221P12 found under Knob by Bell And Howell Phillipsburg Co. The National Stock Number assigned to this part is 5355003947249, 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 11221P12.