Allen Key M3 Standard Hex Wrench, Nickel-Plated
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Prices updated: 13 Oct 2026
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About this product
A standard nickel-plated hex (Allen) key labelled for M3 hardware. It is used to tighten and loosen M3 socket head screws when assembling 3D printers, robots and other electronics or mechanical projects.
Specifications
- Type
- Standard hex (Allen) key
- Size designation
- M3
- Finish
- Nickel-plated
Frequently asked questions
Which screws does it fit?
The key is labelled M3. A standard M3 socket head cap screw normally takes a 2.5 mm hex key, so check the hex size against your screw head before use.
Is it suitable for 3D printer assembly?
Yes. The listing describes it for building your own 3D printer and for robotics assembly work.
