Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0123-98 found under Knob by Lowensten W W. The National Stock Number assigned to this part is 5355012771344, 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 0123-98.