Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D2-990ANDD6-313 found under Gear Set by Western Sky Industries Inc. The National Stock Number assigned to this part is 4320002182649, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D2-990ANDD6-313.