6930-01-322-0217 (257251-002)
6930-01-322-0217 is equivalent to manufacture part number 257251-002. It is a mask assembly and is classified under Federal Supply Class 6930 (6930 - Operation Training Devices), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6930 - Operation Training Devices and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.