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Say goodbye to fumbling for screwdrivers every time you need to adjust or disassemble your project. These M3, M4, and M5 butterfly wing thumb screws let you tighten or loosen by hand in seconds ā no tools, no hassle. Ideal for makers, DIY enthusiasts, 3D printer builders, furniture assemblers and electronics hobbyists, they transform frequent access panels, brackets, and fixtures into quickārelease setups. Crafted from a reliable blend of zincāplated steel and stainless steel, they resist corrosion whether youāre working indoors on a prototype or finishing a backyard fixture. A practical, timeāsaving upgrade for your hardware kit.
| Material | Stainless Steel / Zincāplated Steel (mixed kit) |
|---|---|
| Thread Size | M3 x 0.5, M4 x 0.7, M5 x 0.8 (metric coarse) |
| Screw Size | M3, M4, M5 |
| Head Style | Wing / Butterfly |
| Drive Style | Thumb screw (hand operated) |
| System of Measurement | Metric |
| Condition | Brand New ā unused, original packaging |
| Country of Origin | China |
| Package Includes | Assorted M3, M4, M5 butterfly wing screws (see quantity selection) |
š¹ What sizes come in this set, and how do I identify them?
You receive M3, M4, and M5 wing screws. Theyāre typically sorted by size, but if mixed, the diameter is etched or can be checked with a standard metric nut. Common uses: M3 for electronics and small brackets, M4 for medium fixtures, and M5 for heavier attachments.
š¹ Are these made of stainless steel or zinc? Which one is better for outdoor use?
This listing includes both finishes. Zincāplated screws offer solid strength for dry, indoor environments. Stainless steel versions provide superior rust resistance and are better suited for humid or outdoor projects. If your application is exposed to rain or moisture, we recommend selecting a primarily stainless steel option if available.
š¹ Can I really tighten them entirely by hand? How much torque can I expect?
Absolutely ā the butterfly wings are designed for finger tightening. You can achieve handātight torque sufficient for most nonāstructural applications like access panels, 3D printer beds, or camera mounts. For critical highāvibration joints, you might still use a spanner for final snugging, but for quick adjustments, theyāre unbeatable.
š¹ Will these fit my 3D printer or CNC machine?
Yes, M3, M4, and M5 threads are the most common sizes used in 3D printer frames (like Prusa or Ender style), CNC spindles, and linear rails. The wing head makes bed leveling, spool holder adjustment, and enclosure modifications much faster.
š¹ Do the threads match standard metric nuts and heatāset inserts?
They follow standard metric coarse thread pitches (M3ā0.5, M4ā0.7, M5ā0.8). They are fully compatible with standard metric nuts and threaded brass inserts commonly used in wood, plastic, and 3Dāprinted parts.
š¹ How are these packaged? Will they arrive mixed or separated?
They come in brandānew, original retail packaging. Sizes may be sorted in labeled compartments or combined in a single bag, depending on the supplier batch. We inspect to ensure all three sizes are present.
ā” Stock up on versatile wing screws for your next build. Fast shipping from US inventory.
