Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HM4619DAA2 found under by Hitachi Kokusai Electric America. The National Stock Number assigned to this part is 5821012964713, and the Federal Supply Class is 5821 Radio And Television Communication Equipment Airborne. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HM4619DAA2.