According to cage 52845 part must be purchased through cage 9a017
A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.
NSN 5915-00-273-1693
NSN 5920-00-823-6088
NSN 6130-00-518-1884
NSN 6105-01-290-9373
NSN 5975-00-612-1998
NSN 6150-01-205-8476
NSN 6135-01-475-5204
NSN 5925-01-099-0372
NSN 5945-00-833-8922
NSN 6645-00-616-1289
NSN 5915-01-344-5611
NSN 6620-00-538-3974