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Micro Neodymium Disc Magnet N42 1/8" x 1/16" Rare Earth Magnet
Quick Facts
| Attribute | Value |
|---|---|
| Magnet Type | Neodymium Rare Earth Disc Magnet |
| Grade | N42 |
| Shape | Disc |
| Diameter | 1/8 inch (0.125") |
| Thickness | 1/16 inch (0.0625") |
| Pull Force | Approx. 0.8 lbs |
| Material | NdFeB (Neodymium-Iron-Boron) |
| Coating | Nickel-Copper-Nickel Triple Layer |
| Magnetization | Through Thickness |
| Br Max | 13,200 Gauss |
| Certification | ISO Certified |
Quick Answers
| Question | Answer |
|---|---|
| How strong is this magnet? | Approximately 0.8 lbs of pull force. |
| What is this magnet made of? | NdFeB (Neodymium-Iron-Boron) rare earth material. |
| Is this stronger than N35 magnets? | Yes. N42 magnets provide noticeably greater magnetic strength than N35 magnets of the same size. |
| Can it be used outdoors? | Yes, when protected from prolonged moisture exposure. The Nickel-Copper-Nickel coating helps resist corrosion, but long-term outdoor use may require additional protection. |
| What is it commonly used for? | Electronics, Hall effect sensors, reed switches, medical devices, miniature actuators, robotics, scientific instruments, magnetic closures, and precision assemblies. |
Product Overview
The N42 Micro Neodymium Disc Magnet 1/8" x 1/16" delivers exceptional magnetic performance in an extremely compact package. Manufactured from premium NdFeB rare earth material, this miniature disc magnet provides approximately 0.8 pounds of pull force, making it an excellent solution where high magnetic strength is required but installation space is limited.
Despite its tiny size, this micro disc magnet is engineered for demanding applications including electronics, miniature sensors, robotics, wearable technology, scientific instruments, and precision assemblies. Its 13,200 Gauss BrMax offers significantly stronger magnetic performance than comparable N35, N38, or N40 magnets.
Finished with a durable Nickel-Copper-Nickel triple-layer coating, this magnet provides excellent corrosion resistance while maintaining a smooth, durable surface. The magnet is magnetized through its thickness, producing north and south poles on the flat circular faces for reliable, repeatable magnetic performance.
What Is a Neodymium Disc Magnet?
A neodymium disc magnet is a cylindrical permanent magnet manufactured from an alloy of neodymium, iron, and boron (NdFeB). These rare earth magnets are recognized as the strongest commercially available permanent magnets, offering exceptional magnetic strength relative to their size.
Disc magnets are widely used throughout engineering, electronics, automation, robotics, medical technology, and consumer products because they provide high holding power while fitting into compact spaces where larger magnets cannot.
How Strong Is This Magnet?
Although measuring only 1/8 inch in diameter and 1/16 inch thick, this N42 micro magnet generates approximately 0.8 pounds of pull force under ideal conditions with direct contact to thick, clean steel.
Its N42 magnetic grade delivers greater energy density than N35 magnets, making it ideal for miniature applications where maximizing magnetic performance is critical without increasing component size.
Technical Specifications
| Property | Specification |
|---|---|
| Material | Neodymium (NdFeB) |
| Grade | N42 |
| Shape | Disc |
| Diameter | 0.125 inch (1/8") |
| Thickness | 0.0625 inch (1/16") |
| Br Max | 13,200 Gauss |
| Pull Force | Approx. 0.8 lbs |
| Coating | Nickel-Copper-Nickel (Triple Layer) |
| Magnetization | Through Thickness |
| Weight | 0.001 lbs |
| Certification | ISO Certified |
Magnet Grade Comparison
| Grade | Relative Strength | Typical Applications |
|---|---|---|
| N35 | Standard | General purpose |
| N38 | Moderate | Consumer products |
| N40 | High | Industrial equipment |
| N42 | Higher | Engineering, electronics, robotics |
| N52 | Maximum | High-performance applications |
Disc Magnet Size Comparison
| Size | Typical Use |
|---|---|
| Small | Sensors, electronics, crafts |
| Medium | General holding and fastening |
| Large | Industrial mounting and heavy-duty applications |
Applications by Industry
| Industry | Common Uses |
|---|---|
| Manufacturing | Fixtures, alignment tools, precision assemblies |
| Robotics | Sensors, positioning systems, actuators |
| Electronics | Hall effect sensors, reed switches, connectors |
| Medical | Wearable devices, hearing aids, miniature instruments* |
| Education | STEM kits, laboratory experiments |
| DIY | Miniature projects, custom enclosures, magnetic closures |
*Application suitability depends on final product design and regulatory requirements.
Common Questions About This Magnet
What is the pull force?
This magnet provides approximately 0.8 pounds of pull force under ideal mounting conditions against thick, flat steel.
Is N42 stronger than N35?
Yes. N42 magnets produce noticeably greater magnetic strength than N35 magnets of identical dimensions, making them better suited for demanding engineering and electronic applications.
Can it rust?
Neodymium magnets can corrode if their protective coating is damaged. The Nickel-Copper-Nickel triple coating significantly improves corrosion resistance, but care should still be taken in wet or harsh environments.
Can it be used outdoors?
Yes, for many outdoor applications. However, prolonged exposure to moisture, saltwater, or harsh weather should be avoided unless additional protective sealing is used.
What direction is it magnetized?
This magnet is magnetized through its thickness, meaning the north and south poles are located on the two flat circular faces.
Do you offer bulk discounts?
Yes. Super Magnet Store offers quantity pricing and wholesale discounts for manufacturers, distributors, educational institutions, and OEM customers. Contact us for volume pricing.
Why Buy From Super Magnet Store?
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Premium NdFeB rare earth magnets
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ISO-certified quality
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Consistent magnetic performance
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Precision manufacturing tolerances
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Competitive wholesale pricing
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Bulk discounts available
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Fast shipping
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Trusted supplier for industrial, engineering, and OEM applications
Installation & Handling Tips
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Use cyanoacrylate (super glue) or a high-quality two-part epoxy for permanent installation.
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Embedding the magnet into molded plastic housings provides excellent long-term retention.
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Store magnets in labeled non-metallic containers to prevent accidental attraction and chipping.
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Handle with care, as small neodymium magnets can snap together with surprising force.
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Keep away from children and pets. Small magnets present a serious swallowing hazard.
Enhance Compact Designs With High-Performance Micro Magnets
Designed for engineers, product developers, and manufacturers, the N42 Micro Neodymium Disc Magnet 1/8" x 1/16" delivers exceptional magnetic strength where every fraction of an inch matters. Whether you're building miniature electronics, sensor systems, robotics, or precision instruments, this compact rare earth magnet provides reliable performance in the smallest possible footprint.
Order yours today from Super Magnet Store.
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