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SKU: ND030-1

Rare Earth Neodymium Disc Magnets 1/2 x 1/10 inch Bottle Cap

$ 0.78
$ 0.78

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1/2" x 1/10" N42 Neodymium Disc Magnets – Bottle Cap Rare Earth Magnets

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N42
Shape Disc
Diameter 1/2" (0.500")
Thickness 1/10" (0.100")
Pull Force Approximately 5.2 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
How strong is this magnet? Approximately 5.2 lbs of pull force, making it ideal for bottle cap magnets and other small projects.
What is this magnet made of? NdFeB (Neodymium-Iron-Boron) rare earth material.
Is this stronger than N35 magnets? Yes. N42 provides greater magnetic strength than N35, N38, and N40 magnets of the same size.
Can it be used outdoors? Yes, but additional sealing is recommended for long-term exposure to moisture or harsh environments.
What is it commonly used for? Bottle cap magnets, refrigerator magnets, crafts, magnetic closures, displays, and lightweight organization.

Product Overview

These 1/2" x 1/10" N42 Neodymium Disc Magnets are specifically designed for bottle cap magnets and other compact projects that require dependable holding power. The 1/2-inch diameter fits standard bottle caps perfectly, while the thicker 1/10-inch profile delivers noticeably greater magnetic strength than thinner disc magnets, helping finished projects stay securely attached to metal surfaces.

Manufactured from premium N42 grade rare earth neodymium, these magnets provide a reliable combination of strength, consistency, and durability. They are an excellent choice for custom refrigerator magnets, DIY crafts, displays, magnetic closures, and organizing lightweight items around the home, classroom, workshop, or office.

Each magnet is protected by a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that offers outstanding resistance to corrosion, scratches, and chipping while maintaining a smooth, polished metallic finish.

What Is a Neodymium Disc Magnet?

A neodymium disc magnet is a circular permanent magnet made from NdFeB (Neodymium-Iron-Boron), the strongest commercially available magnetic material. Disc magnets are magnetized through their thickness, placing the north and south poles on the two flat circular faces to maximize holding power.

Their compact size and impressive strength make them ideal for bottle cap crafts, displays, woodworking, packaging, educational projects, magnetic closures, and countless DIY applications.

How Strong Is This Magnet?

This 1/2" x 1/10" N42 disc magnet delivers approximately 5.2 pounds of pull force under ideal conditions using a thick, clean steel surface.

Its combination of a wide contact area and increased thickness provides a secure hold while remaining compact enough to fit neatly inside standard bottle caps and other small projects.

Technical Specifications

Specification Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N42
Shape Disc
Diameter 1/2"
Thickness 1/10"
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Through Thickness
Pull Force Approximately 5.2 lbs
Br Max 13,200 Gauss
Certification ISO Certified

Nickel-Copper-Nickel Triple-Layer Coating

Every magnet features a Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating for superior durability and corrosion resistance.

Benefits

  • Excellent scratch resistance
  • Superior protection against chipping and cracking
  • Outstanding corrosion resistance
  • Smooth, polished metallic finish
  • Long-lasting durability for everyday use

Magnet Grade Comparison

Grade Relative Strength Typical Applications
N35 Standard General purpose
N38 Moderate Consumer products
N40 High Industrial
N42 Higher Crafts, woodworking, engineering, magnetic closures
N52 Maximum High-performance applications

Disc Magnet Size Comparison

Size Typical Use
Small Crafts, sensors, miniature electronics
1/2" x 1/10" Bottle cap magnets, refrigerator magnets, magnetic displays
Medium General holding, woodworking
Large Industrial mounting and fabrication

Applications by Industry

Industry Common Uses
Arts & Crafts Bottle cap magnets, custom decorations
Education Classroom displays and STEM projects
Retail & Displays Promotional magnets and signage
DIY Refrigerator magnets, home organization, custom projects
Office Holding notes, photos, reminders, and lightweight items

Common Questions About This Magnet

What is the pull force?

This magnet delivers approximately 5.2 pounds of pull force under ideal conditions.

Will it fit inside a standard bottle cap?

Yes. The 1/2-inch diameter is designed to fit most standard bottle caps, making it an excellent choice for bottle cap magnet projects.

Is N42 stronger than N35?

Yes. N42 offers significantly greater magnetic strength than N35 magnets of the same dimensions.

Can it rust?

Like all neodymium magnets, it contains iron and may corrode if the protective coating is damaged or exposed to moisture for extended periods.

Can it be used outdoors?

Yes. However, for long-term outdoor applications, additional sealing is recommended to maximize corrosion resistance.

What direction is it magnetized?

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

Do you offer bulk discounts?

Yes. Contact Super Magnet Store for wholesale pricing on bottle cap magnets and volume discounts for large quantity orders.

Why Buy From Super Magnet Store?

  • Premium NdFeB rare earth magnets
  • ISO-certified quality
  • Consistent magnetic performance
  • High-strength N42 grade
  • Perfect size for standard bottle cap magnets
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Excellent corrosion resistance
  • Competitive wholesale pricing
  • Bulk discounts available
  • Trusted supplier serving industrial, commercial, educational, and DIY customers worldwide



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Total price$ 90.24

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