Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KG021 found under Keyboard Data Entry by Butler Newall Inc. The National Stock Number assigned to this part is 5999013076981, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KG021.