Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 664-2354 found under Knob by Allied Electronics Inc. The National Stock Number assigned to this part is 5355015303955, 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 664-2354.