1. NASM25027, Nut, self-locking, 250°F, 450°F and 800°F, National Aerospace Standard (1999)
2. NASM8846, Inserts, screw-thread, helical coil, National Aerospace Standard (1998)
3. MIL-I-45914A, Insert, screw thread – locked in, key locked, Department of Defense Military Specification (1991)
4. MIL-I-45932/1C, Insert, screw thread – thin wall, locked in, Department of Defense Military Specification (1994)
5. NAS3350, Nuts, self-locking, 450°F and 800°F, high quality, National Aerospace Standard (2006)