6610-01-068-7974 (1139-22)
6610-01-068-7974 is equivalent to manufacture part number 1139-22. It is a front plate adapter and is classified under Federal Supply Class 6610 (6610 - Flight Instruments), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6610 - Flight Instruments and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.