5840-00-334-5241 (M7420401-1REV3)
5840-00-334-5241 is equivalent to manufacture part number 40289. It is a crystal holder and is classified under Federal Supply Class 5840 (5840 - Radar Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5840 - Radar Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.