6610-00-802-8057 (M2175)
6610-00-802-8057 is equivalent to manufacture part number M2175. It is a ring spacer 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.