Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 631MS1018 found under Window Dial by Anritsu Company. The National Stock Number assigned to this part is 5355005818053, 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 631MS1018.