5110-00-180-0921 (2-1/4)
5110-00-180-0921 is equivalent to manufacture part number 2-1/4. It is a knockout punch and die and is classified under Federal Supply Class 5110 (5110 - Hand Tools, Edged), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5110 - Hand Tools, Edged and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.