A cylindrical-shaped nut, the end opposite the bearing surface being designed with an internal socket or splines for use with an inserted wrench.
NSN 5905-01-297-2744
NSN 6105-01-190-5434
NSN 5945-01-251-2182
NSN 5945-00-005-9719
NSN 6685-01-337-8389
NSN 5996-01-589-6045
NSN 2925-00-295-8109
NSN 5835-00-912-5656
NSN 6135-00-248-4102
NSN 5835-01-399-5820
NSN 6130-01-587-7280
NSN 5930-01-648-3357