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SKU: ND032-1

Neodymium Disc Magnet N42 – 1/2" Diameter x 3/16" Thick Rare Earth Magnet

$ 1.09
$ 1.09

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1/2" x 3/16" N42 Neodymium Disc Magnets – Strong Rare Earth Magnets

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N42
Shape Disc
Diameter 0.5" (12.7 mm)
Thickness 0.1875" (3/16" / 4.76 mm)
Pull Force Approx. 10.5 lbs
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer
Magnetization Through Thickness
Br Max 13,200 Gauss
Certification ISO Certified

Quick Answers

Question Answer
What is this magnet made of? NdFeB (Neodymium-Iron-Boron) rare earth material.
How strong is this magnet? Approximately 10.5 lbs of pull force under ideal conditions.
Is N42 stronger than N35 magnets? Yes. N42 provides greater magnetic strength and holding power than N35, N38, and N40 magnets.
Can this magnet rust? The Nickel-Copper-Nickel coating helps protect against corrosion, but damage to the coating can allow rust to develop over time.
Can it be used outdoors? Yes, but additional sealing or protection is recommended for long-term outdoor use.
What direction is it magnetized? Through the thickness, with the north and south poles located on the two flat circular faces.
What is this magnet commonly used for? Manufacturing, engineering, robotics, woodworking, workshop organization, science projects, magnetic closures, and DIY applications.

Product Overview

The Super Magnet Store 1/2" x 3/16" N42 Neodymium Disc Magnet delivers powerful magnetic performance in a compact, versatile size. Measuring 0.5 inch in diameter and 3/16 inch thick, this rare earth magnet produces approximately 10.5 pounds of pull force, making it ideal for applications that require dependable holding power without a large footprint.

Manufactured from premium NdFeB (Neodymium-Iron-Boron) and protected by a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, this magnet offers outstanding durability, corrosion resistance, and consistent performance. It is an excellent choice for industrial equipment, woodworking, product development, robotics, magnetic fixtures, workshop organization, educational projects, and countless DIY applications.

What Is a Neodymium Disc Magnet?

A neodymium disc magnet is a permanent rare earth magnet manufactured from neodymium, iron, and boron (NdFeB). Neodymium magnets are the strongest commercially available permanent magnets and are widely used in industrial, commercial, scientific, and consumer products.

Disc magnets are among the most versatile magnet shapes, offering exceptional holding power in a compact, low-profile design. They are commonly used for magnetic closures, fixtures, sensors, electronics, robotics, displays, woodworking, and precision assemblies.

Neodymium magnets are also known as Neo magnets, NdFeB magnets, NIB magnets, or super magnets.

How Strong Is This Magnet?

This 1/2" x 3/16" N42 neodymium disc magnet provides an approximate 10.5 pounds of pull force under ideal testing conditions.

Actual holding force may vary depending on several factors, including:

  • Surface material
  • Steel thickness
  • Contact area
  • Air gap
  • Mounting method
  • Environmental conditions

For maximum holding performance, use this magnet against a clean, flat, thick steel surface.

Note: Pull force values are estimates based on ideal laboratory conditions. Actual performance should always be verified in your specific application.

Technical Specifications

Specification Value
Grade N42
Shape Disc
Diameter 0.5" (12.7 mm)
Thickness 3/16" (0.1875" / 4.76 mm)
Pull Force Approx. 10.5 lbs
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Direction Through Thickness
Br Max 13,200 Gauss
Certification ISO Certified

Nickel-Copper-Nickel Triple-Layer Coating

Every magnet is protected with a Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that provides excellent durability and corrosion resistance.

Benefits

  • Superior scratch resistance
  • Excellent resistance to chipping and cracking
  • Outstanding corrosion protection
  • Smooth, polished metallic finish
  • Longer service life than many alternative coatings

Magnet Grade Comparison

Grade Relative Strength Typical Applications
N35 Standard General-purpose magnets
N38 Moderate Consumer products
N40 High Industrial and commercial use
N42 Higher Engineering, manufacturing, robotics
N52 Maximum High-performance applications

N42 magnets offer stronger magnetic performance than N35, N38, and N40 magnets while providing an excellent balance of strength, reliability, and value.

Disc Magnet Size Comparison

Size Typical Use
Small Crafts, sensors, miniature electronics
1/2" x 3/16" Magnetic closures, woodworking, fixtures, displays, general holding
Large Industrial mounting and fabrication

Applications by Industry

Industry Common Uses
Manufacturing Fixtures, jigs, magnetic assemblies
Engineering Product development and prototyping
Robotics Sensors, positioning systems, magnetic attachments
Electronics Mounting components and assemblies
Education STEM projects and science demonstrations
Research Laboratory experiments and testing
Workshop & Garage Tool organization and storage systems
DIY & Makers Crafts, inventions, woodworking, home improvement projects

Common Questions About This Magnet

Is N42 stronger than N35 magnets?

Yes. N42 magnets provide greater magnetic strength and holding power than N35 magnets of the same size and shape.

What is the pull force of this magnet?

This magnet provides approximately 10.5 pounds of pull force under ideal testing conditions.

Is this magnet coated?

Yes. It features a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that helps protect against corrosion, oxidation, scratches, and everyday wear.

Can this magnet rust?

The protective coating helps prevent corrosion. However, if the coating becomes damaged and the magnet is exposed to moisture, corrosion may occur over time.

Can this magnet be used outdoors?

Yes. However, additional sealing is recommended for long-term outdoor use or humid environments.

What direction is the magnetized orientation?

This magnet is magnetized through the thickness, with the north and south poles located on the two flat circular faces.

Is the pull force guaranteed?

No. The stated 10.5-pound pull force is an estimate based on ideal laboratory testing. Actual performance should always be verified in your specific application.

Do you offer wholesale pricing?

Yes. Super Magnet Store offers volume discounts and wholesale pricing for commercial, industrial, educational, and OEM customers.

Why Buy From Super Magnet Store?

  • Premium N42 NdFeB rare earth magnets
  • ISO-certified quality
  • Consistent magnetic performance
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Excellent corrosion resistance
  • Precision manufacturing for reliable performance
  • Competitive pricing and bulk discounts
  • Trusted by engineers, manufacturers, educators, and makers worldwide

Contact Super Magnet Store for wholesale pricing, volume discounts, and custom magnetic solutions.



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