5210-00-494-1738 (19)
5210-00-494-1738 is equivalent to manufacture part number 19. It is a micrometer calip ball attachment and is classified under Federal Supply Class 5210 (5210 - Measuring Tools), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5210 - Measuring Tools and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.