5120-01-265-1815 (666)
5120-01-265-1815 is equivalent to manufacture part number 666. It is a piston ring clamp and is classified under Federal Supply Class 5120 (5120 - Hand Tools, Nonedged), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5120 - Hand Tools, Nonedged and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.