6640-00-268-8565 (300-2913-Y20)
6640-00-268-8565 is equivalent to manufacture part number 300-2913-Y20. It is a test tube cover and is classified under Federal Supply Class 6640 (6640 - Laboratory Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6640 - Laboratory Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.