Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2840392-040 found under Core Memory Unit by Steward Inc. The National Stock Number assigned to this part is 7025015588298, and the Federal Supply Class is 7025 Adp Input Output And Storage Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2840392-040.