Keps Nut vs. Nylon Lock Nut
Both resist vibration loosening, but they lock by two different mechanisms.
| Feature | Keps Nut | Nylon Lock Nut |
|---|---|---|
| Locking method | Free-spinning toothed washer | Nylon insert grips the thread |
| Reuse | Limited — washer teeth wear | Good for several cycles |
| Temperature | Higher — all metal | Limited by nylon (about 250F) |
| Run-down | Fast, no extra drag | Extra drag to thread on |
| Best for | Assembly lines, electrical grounds | Vibration, automotive, machinery |
Verdict
Nylon lock nuts hold better under sustained vibration; Keps nuts save time in high-volume assembly and work where heat rules out nylon.