My wake-up call about torque wrenches came from a flickering light

I always tightened connections until they seemed good enough. While fixing a flickering light in an old home, I checked the panel. A neutral connection felt tight, but I used a torque wrench anyway. It was way under the proper setting. After tightening to spec, the flickering stopped completely. This made me realize how crucial exact torque is for safety and performance. I'm curious if others have had this kind of eye-opening moment.

3 comments

3 Comments

dakota3791mo ago

Reading this reminds me of stripping the threads on a crankcase bolt by just guessing the tightness. It felt secure until the oil started leaking all over my driveway. That was a messy and expensive lesson. @robin874 calling it a safety hazard is spot on, because my cheap fix almost wrecked the engine. Now I borrow a torque wrench for anything critical on my bike. You really don't know what's loose until it fails.

robin8741mo ago

My whole "good enough" phase was a safety hazard.

river9291mo ago

Been there with the "feels tight enough" logic. Torque specs exist for a reason, especially on brake calipers and axle nuts. I started using a paint marker to put a tiny line on the bolt head and the part it screws into after torquing. If the lines ever don't match up, you know it moved. Saves a lot of second-guessing.