5810-01-516-1231 (K10048240-509)
5810-01-516-1231 is equivalent to manufacture part number FNAC21-XI. It is a security data system and is classified under Federal Supply Class 5810 (5810 - Communications Security Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5810 - Communications Security Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.