N42 Neodymium Disc Magnet 1/4" x 1/8" Rare Earth Magnet
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Disc Magnet |
| Grade |
N42 |
| Shape |
Disc |
| Diameter |
1/4 inch (0.250") |
| Thickness |
1/8 inch (0.125") |
| Pull Force |
Approx. 3.3 lbs or more |
| 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 3.3 lbs or more of pull force under ideal conditions. |
| What is this magnet made of? |
NdFeB (Neodymium-Iron-Boron) rare earth material. |
| Is this stronger than N35 magnets? |
Yes. N42 magnets provide greater magnetic strength than N35, N38, and N40 magnets of the same dimensions. |
| Can it be used outdoors? |
Yes. The Nickel-Copper-Nickel coating provides excellent corrosion resistance, although additional sealing is recommended for long-term outdoor or marine environments. |
| What is it commonly used for? |
Magnetic closures, woodworking, crafts, displays, organization, electronics, DIY projects, and embedded magnetic mounts. |
Product Overview
The N42 Neodymium Disc Magnet 1/4" x 1/8" offers dependable magnetic performance in a compact and versatile size. With a 1/4-inch diameter and a thicker 1/8-inch profile, this rare earth disc magnet provides greater holding power than thinner disc magnets while maintaining a small footprint that fits easily into a wide variety of projects.
Manufactured from premium N42 grade NdFeB (Neodymium-Iron-Boron), these magnets deliver reliable magnetic strength for everyday industrial, commercial, and hobby applications. The increased thickness creates a deeper magnetic field, making these magnets an excellent choice for woodworking, magnetic closures, displays, fixtures, electronics, and embedded installations where a stronger hold is required.
Each magnet is protected by a durable Nickel-Copper-Nickel triple-layer coating that helps resist corrosion while providing a smooth, polished finish. Whether you're building custom products, organizing tools, or creating magnetic fixtures, these compact N42 disc magnets provide consistent, long-lasting performance.
What Is a Neodymium Disc Magnet?
A neodymium disc magnet is a circular permanent magnet manufactured from neodymium, iron, and boron (NdFeB). Known for offering the highest magnetic strength relative to size, neodymium disc magnets are widely used throughout manufacturing, engineering, electronics, woodworking, retail displays, and consumer products.
Their flat profile and high magnetic energy make them ideal for magnetic closures, embedded installations, holding fixtures, sensors, and precision assemblies where compact dimensions are important.
How Strong Is This Magnet?
This N42 neodymium disc magnet produces approximately 3.3 pounds or more of pull force under ideal conditions against a thick, flat steel surface. Its 1/8-inch thickness provides a deeper magnetic field than thinner disc magnets, resulting in stronger holding performance while maintaining a compact diameter.
The premium N42 magnetic grade delivers significantly greater strength than standard N35 magnets, making it an excellent balance of performance, size, and value for a wide variety of applications.
Technical Specifications
| Property |
Specification |
| Material |
Neodymium (NdFeB) |
| Grade |
N42 |
| Shape |
Disc |
| Diameter |
0.250 inch (1/4") |
| Thickness |
0.125 inch (1/8") |
| Br Max |
13,200 Gauss |
| Pull Force |
Approx. 3.3 lbs or more |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization |
Through Thickness |
| Certification |
ISO Certified |
Magnet Grade Comparison
| Grade |
Relative Strength |
Typical Applications |
| N35 |
Standard |
General purpose |
| N38 |
Moderate |
Consumer products |
| N40 |
High |
Industrial |
| N42 |
Higher |
Engineering, woodworking, electronics |
| N52 |
Maximum |
High-performance applications |
Disc Magnet Size Comparison
| Size |
Typical Use |
| Small |
Crafts & sensors |
| Medium |
General holding |
| Large |
Industrial mounting |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Fixtures, jigs, positioning tools |
| Robotics |
Sensors & positioning systems |
| Electronics |
Components, enclosures, magnetic switches |
| Education |
STEM projects and classroom demonstrations |
| DIY |
Crafts, woodworking, home organization, models |
Common Questions About This Magnet
What is the pull force?
This magnet provides approximately 3.3 pounds or more of pull force under ideal conditions against a thick steel surface.
Is N42 stronger than N35?
Yes. N42 provides noticeably greater magnetic strength than N35 magnets of the same size, making it a popular choice for engineering and industrial applications.
Can it rust?
Like all neodymium magnets, the core material can corrode if exposed. The Nickel-Copper-Nickel triple-layer coating provides excellent protection against moisture, oxidation, and everyday wear.
Can it be used outdoors?
Yes. For continuous outdoor or marine environments, additional sealing is recommended to maximize service life.
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 competitive wholesale pricing and quantity discounts for manufacturers, distributors, educational institutions, retailers, and OEM customers.
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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Durable Nickel-Copper-Nickel triple coating
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Competitive wholesale pricing
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Bulk discounts available
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Fast shipping from a trusted magnet supplier
