Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MG590BK47 found under Window Dial by Kollsman Inc. The National Stock Number assigned to this part is 5355005386387, 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 MG590BK47.