1. to tighten something more than is necessary or appropriate; to apply excessive tension or pressure
Usage: transitive verb; common in technical and mechanical contexts

Examples

• Don't overtighten the bolt or you may strip the threads.
• If you overtighten the jar lid, it will be difficult to open later.
• The mechanic warned me not to overtighten the lug nuts on my wheels.
• Overtightening the guitar strings can damage the neck.
• She accidentally overtightened the clamp, cracking the delicate wood.
• The instructions specifically say not to overtighten the screws.
• Overtightening a water bottle cap can cause the plastic to warp.