One end has 12 serrations equally spaced
An internally threaded item with a cylindrical and/or square, hexagonal, octagonal, or dodecagonal outer periphery (parallel to the threaded axis) a portion(s) of which may or may not be enlarged, forming a flange(s) and/or shoulder(s). Items not having an enlarged outer portion may be threaded, a part of the full length, or tapped from both ends. Items having an enlarged outer portion (flange(s) or shoulder(s)) may be threaded the full length, threaded a part of the full length, or tapped from both ends. Items tapped from both ends shall have either right-hand threads on both ends or left-hand threads on both ends. For items conforming to any of the above and having a length overall exceeding two times the largest outside diameter or width across flats, use post, electrical-mechanical equipment. For items with an outside contour that is the same the full length, having a continuous thread through its entire length, and the length does not exceed two times the diameter or width across the flats use nut (1), plain (as modified). Excludes nut (1), plain, cap. See also turnbuckle body.
Classification: Nuts of iron or steel
NSN 2925-00-945-0792
NSN 6645-01-412-5781
NSN 6220-00-492-8136
NSN 5835-00-013-9271
NSN 5910-01-306-2346
NSN 5910-01-422-4782
NSN 6240-01-288-7061
NSN 5996-01-541-4974
NSN 5920-00-115-0001
NSN 6105-00-109-3633
NSN 6650-00-176-1911
NSN 6220-00-621-8149