Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FRB 23144-1E found under Knob by Exelis Inc. The National Stock Number assigned to this part is 5355006441860, 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 FRB 23144-1E.