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When your glasses start to feel wobbly, one of the smallest components is often to blame — the screws. These tiny parts hold together the hinges, bridge, and lenses that keep your glasses functioning properly. Yet, because they’re so small, they can easily loosen, fall out, or wear down over time.
Understanding the different eyeglass screw sizes, types, and how to replace them can save you time, money, and a trip to the optician. Whether you’re dealing with a missing hinge screw or a stripped thread, this guide will help you master eyeglass screw maintenance like a pro.
👓 What Are Eyeglass Screws and Why They Matter
Eyeglass screws are the miniature fasteners that connect the moving parts of your glasses. The most common screws are found in three places:
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Hinges – Connecting the arms (temples) to the frame front.
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Bridge or lens screws – Holding rimless or semi-rimless lenses securely in place.
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Nose pads – Attaching nose pad mounts to the frame.
Each screw type has a specific size and function. When one comes loose or goes missing, your glasses can quickly become unwearable — or worse, break completely.
That’s why having a SnapitScrew Eyeglass Repair Kit or Screw Refill Kit at home is essential for quick, easy repairs.
🔎 Common Eyeglass Screw Sizes (and Why Size 1.4 Is Most Popular)
Eyeglass screws may look identical at a glance, but they come in different diameters and lengths depending on your frame type. The most common diameters used in eyeglasses are:
| Screw Size | Common Use | Notes |
|---|---|---|
| 1.2 mm | Small, delicate frames | Used for fine or lightweight designs. |
| 1.4 mm | Standard size | Fits most everyday glasses and sunglasses. |
| 1.5 mm | Slightly larger hinges | Adds durability for medium frames. |
| 1.6 mm | Sturdy frames | Used for heavier or metal glasses. |
| 1.7 mm | Large or industrial eyewear | For tough, heavy-duty hinges. |
Among these, 1.4 mm screws are the most widely used across everyday eyeglasses, making them a must-have in any repair kit.
💡 Pro tip: SnapitScrew’s Refill Kits include all these sizes — perfect for when you’re not sure which one you need.
🧰 Types of Eyeglass Screws
Different parts of your glasses use different types of screws. Here are the main ones you’ll encounter:
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Hinge screws: These connect the arms to the frame. They’re the most likely to loosen over time.
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Nose pad screws: Secure the small nose pad arms to the bridge.
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Lens screws: Found on semi-rimless or rimless glasses, keeping the lenses attached.
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Barrel screws: Used in spring hinges to provide flexibility and comfort.
It’s worth knowing which type your frame uses so you can choose the correct replacement screw and screwdriver head.
🔧 How to Replace a Missing or Stripped Eyeglass Screw
If you’ve ever dropped a screw from your glasses, you know how frustrating it can be. Luckily, replacing one is straightforward when you use the right tools.
Step 1: Choose the right screw
Open your SnapitScrew Refill Kit and match a replacement screw to your frame. If you’re unsure, start with 1.4 mm — it fits most standard glasses.
Step 2: Insert the new screw
Snapit’s patented design makes this step simple:
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Slide the screw through the hinge or lens mount.
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Tighten gently using the included screwdriver.
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Once secure, snap off the tail of the screw — no cutting or trimming required.
Step 3: Test the fit
Open and close the arms to make sure the hinge feels smooth and snug. If it’s stiff, loosen slightly. If it still feels loose, recheck that the screw is fully tightened and properly seated.
⚙️ Troubleshooting Common Screw Problems
Here are a few common issues and how to fix them:
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Screw keeps loosening: Apply a tiny drop of clear nail polish or threadlocker before tightening — it adds grip.
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Screw won’t tighten: The threads in the hinge may be stripped. Use a slightly larger screw or replace the hinge.
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Screw won’t fit: Make sure you’re using the right size; Snapit kits include multiple options for a perfect fit.
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Lost screw entirely: Use your spare screws from the refill kit — never force a screw from another object, as it can damage your frames.
🧠 Pro Maintenance Tips
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Check screws monthly: Quick preventive maintenance saves you from bigger repairs later.
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Avoid overtightening: Too much force can crack the frame or strip threads.
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Keep spares handy: A Snapit screw set at home or in your travel bag ensures you’re never caught off guard.
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Store glasses safely: Avoid dropping or twisting your glasses to keep the hinges in good condition.
🏁 Final Thoughts
Eyeglass screws might be tiny, but they’re essential to keeping your glasses comfortable, balanced, and secure. Learning how to replace or tighten them yourself gives you independence — and can extend the life of your favourite frames by years.
With SnapitScrew’s Repair Kits and Refill Kits, you’ll always have the right size screw, the right tool, and the confidence to fix your glasses in minutes — no optician visit required.
Don’t let a missing screw keep your glasses out of action — snap it, tighten it, and you’re good to go.
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