What Size Screws Do Glasses Use? Complete Guide (M1.2–M1.7)

Introduction

Screws are the backbone of your glasses. Even a loose or missing screw can make glasses uncomfortable or unusable. But with sizes ranging from M1.2 to M1.7, it can be confusing to know which screw to use for your frames.

This guide explains all common eyeglass screw sizes, how to identify them, and why Snapit kits make screw selection and replacement simple.

Common Eyeglass Screw Sizes

1. M1.2 Screws

   • Smallest size in most kits

   • Used for lightweight frames or delicate hinges

2. M1.4 Screws (Most Popular)

   • Fits most standard frames

   • Ideal for metal and plastic frames

   • Frequently included in standard and premium Snapit kits

3. M1.5 Screws

   • Slightly larger for thicker frames

   • Offers added stability for heavier lenses

4. M1.6 Screws

   • Commonly used in sunglasses or specialty frames

   • Provides extra strength for robust frames

5. M1.7 Screws

   • Largest standard size

   • Often used in premium or designer frames

   • Offers maximum durability and support

How to Identify the Right Screw Size

• Check existing screws – If a screw is missing, measure it or compare it to your kit’s selection.

• Frame type – Metal frames often need M1.4–M1.7 screws, while plastic frames may use M1.2–M1.5.

• Use Snapit kits – They include all standard sizes, plus a patented system for easy insertion: Snapit Premium Kit.

Why Snapit Screw Refill Kits Are Essential

Even with a full repair kit, screws can get lost or stripped over time. Snapit refill kits ensure you always have:

• Full range of sizes – M1.2 to M1.7

• High-quality screws – Won’t strip or corrode

• Easy storage and access – Organize screws for quick repairs

• Snapit Screw Refill Kit

Tips for Replacing Eyeglass Screws

1. Work on a flat surface – Prevent screws from falling or getting lost.

2. Select the right size – M1.4 is standard; check if your frame needs a different size.

3. Use precision tools – Tweezers, mini screwdrivers, and Snapit patented system.

4. Tighten gently – Avoid over-tightening to prevent stripped threads.

5. Check alignment – Ensure arms, nose pads, and lenses are properly aligned.

Troubleshooting Common Screw Issues

• Loose screws – Regular tightening every 2–3 months prevents damage.

• Stripped screws – Replace with a Snapit refill screw immediately.

• Missing screws – Keep an organized kit with spare screws on hand.

• Bent frames – Correct minor bends before inserting screws to prevent misalignment.

Bottom Line

Knowing the right eyeglass screw sizes is crucial for maintaining comfortable, functional glasses. Snapit kits and refill kits provide all the necessary sizes (M1.2–M1.7), tools, and guidance to make DIY repairs fast and reliable. By investing in a high-quality kit and refills, you’ll never struggle with loose, missing, or stripped screws again.

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