5315-00-441-4688 (20521-2)
5315-00-441-4688 is equivalent to manufacture part number 20521-2. It is a woodruff key and is classified under Federal Supply Class 5315 (5315 - Nails, Keys, and Pins), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5315 - Nails, Keys, and Pins and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.