4470-01-103-8377 (D1415PIECE13)
4470-01-103-8377 is equivalent to manufacture part number B1669. It is a stem 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.