The Screw Won't Stay In. I've Tightened It Five Times. Here's What's Actually Wrong.

You've tightened that screw so many times you've lost count. It holds for a day, maybe two, then starts wobbling again. Tighten, wait, wobble. Tighten, wait, wobble. The cycle never ends.

This isn't a screw problem. It's a thread problem. And once you understand what's happening, you can actually fix it permanently.

Why Normal Tightening Stops Working

Inside the hinge barrel is a tiny threaded hole. The screw's threads grip these internal threads, creating a secure connection. When you tighten, threads interlock. When everything works properly, the screw stays put.

But threads wear out. Every tightening cycle causes microscopic damage. Eventually, the internal threads become so worn that the screw has nothing to grip. It goes in, but it won't stay tight. The threads slip past each other without locking.

This is called a stripped thread, and it's incredibly common in glasses that have been worn for a few years. The more often screws have loosened and been retightened, the faster the threads degrade.

The Wrong Fix Everyone Tries

Most people respond to recurring loosening by tightening harder. This makes everything worse. Forcing the screw damages the remaining thread material. What was marginal becomes unusable. What was fixable becomes permanent.

Another common mistake is using the wrong size screw. If someone previously replaced the original screw with one that was slightly too large, it may have forced its way through, destroying the threads in the process.

Super glue on the screw threads is another bad idea. It might hold temporarily, but it prevents future proper repairs and makes eventual professional help more complicated.

The Actual Solution: Go Slightly Larger

Here's the fix: use a screw that's one size larger in diameter than the original.

A SnapItScrew Eyeglass Repair Kit includes five screw sizes ranging from 1.2mm to 1.7mm. If your original screw was the medium 1.4mm and that's what keeps coming loose, try the large 1.5mm or extra-large 1.6mm.

The larger diameter screw creates new threads in previously undamaged material. It grips fresh metal or plastic beyond the worn-out zone. The connection is secure because you're not relying on stripped threads - you're making new ones.

How to Make the Upgrade

Remove the old screw completely. Select the next size up from your SnapItScrew kit. Don't jump multiple sizes - one step up is usually sufficient.

Thread the new screw in slowly. You might feel slight resistance as it cuts new threads. This is normal and desirable - it means the screw is gripping fresh material. Don't force it if resistance is significant, as that could crack the frame.

Once seated, the slightly larger screw should feel noticeably more secure than the original. Test by opening and closing the arm several times. It should hold firm.

When the Frame Is Too Far Gone

Sometimes the hinge barrel is so damaged that even going up a size doesn't help. If every screw size just spins freely, the internal structure has failed entirely.

In these cases, you have options beyond giving up:

Some people successfully use a tiny dab of clear nail polish on the screw threads before inserting. This adds thickness and friction without the permanence of super glue. It can be enough to make a marginal situation workable.

Thread-locking compound designed for tiny screws exists, though it's probably overkill for glasses. A drop creates a semi-permanent bond that holds the screw but can still be broken with a screwdriver if needed.

Professional repair involving insertion of a new threaded insert is possible for valuable frames. But for most glasses, this costs more than replacement frames would.

Preventing Future Stripping

Once you've solved the current problem, protect against recurrence. Don't overtighten - snug is sufficient. The screw should be secure without being forced.

If you notice occasional loosening, tighten promptly. Each time a loose screw moves around in the hinge, it damages threads slightly. Catching looseness early means less damage accumulating over time.

Use the right tool. The SnapItScrew kit includes a properly sized screwdriver. Using knives, scissors, or wrong-sized screwdrivers damages screw heads and makes future tightening harder.

The Bottom Line

If a screw won't stay tight no matter how many times you tighten it, the thread is stripped. Tightening harder makes it worse. The fix is going one size larger in screw diameter.

A SnapItScrew kit gives you five sizes to work with, so you can find the right upgrade. Most stripped-thread problems are completely fixable at home in about 60 seconds.

You CAN fix this yourself - permanently, not just temporarily. Stop the tighten-wobble cycle today.