4470-01-013-7940 (E226PC29REVK)
4470-01-013-7940 is equivalent to manufacture part number E-223PC32. It is a special nut and is classified under Federal Supply Class 4470 (4470 - Nuclear Reactors), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4470 - Nuclear Reactors and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.