Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MDS-21 found under Backshell Electrica by Itt Cannon. The National Stock Number assigned to this part is 5935015462069, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MDS-21.