12x4 Disc Magnet (Round Magnet), Neodymium disc magnet
12 mm across and 4 mm high, the 12x4 disc magnet (Neodymium disc magnet) is nickel-plated and magnetised through the height. Here as simplified STEP files.

How these parts are made, and what the levels mean: read the method
- Also searched as: 12x4 disc magnet
- Model id:
magnets-disc-12x4
- Standard: Neodymium disc magnet · size 12x4
Files
| Part key | Simplified |
|---|
magnets-disc-12x4 | STEP |
Dimensions

| Symbol | Name | min | nom | max | Modeled | Rule | Level |
|---|
| D | Diameter | | 12 | | 12 | nominal | L1 |
| H | Height | | 4 | | 4 | nominal | L1 |
Drawing

As a PDF: CC-MAGDISC-SZ-12x4.pdf.
What each maker states
- supermagnete lists this size in N45.
- first4magnets lists this size in N42.
- The shape is the same in any grade.
The 12x4 disc magnet beside the 12x3 and the 12x6
The 12x4 is number 38 of the 51 Neodymium disc magnet disc magnets published here, listed from 2x1 to 30x10.
- Diameter (D): 12 mm on the 12x4 disc magnet, the same on the 12x3 and the 12x6.
- Height (H): 4 mm on the 12x4 disc magnet, against 3 mm on the 12x3 and 6 mm on the 12x6.
Other sizes
- One size smaller: 12x3 Disc Magnet (Round Magnet), Neodymium disc magnet, 12 mm across, 3 mm high, nickel-plated, axially magnetised.
- One size larger: 12x6 Disc Magnet (Round Magnet), Neodymium disc magnet, 12 mm across, 6 mm high, nickel-plated, axially magnetised.
Documents
Sources
first4magnets-disc, supermagnete-magnets-disc. Full citations: the method page and this size's datasheet.
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