In a vibration-sensitive application, it may be needed in addition to a torque spec. The radar hardware I used to support had either Loctite or locking helicoi

In a vibration-sensitive application, it may be needed in addition to a torque spec. The radar hardware I used to support had either Loctite or locking helicoils on nearly every mechanical attachment point. Our hardware would not have passed our vibe tests without it.