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SKU: ND056-6

High Strength N52 Neodymium Magnets 1 in x 3/16 in Disc w/Countersunk Hole

$ 12.00
$ 5.59
$ 12.00
$ 5.59

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1" x 3/16" N52 Countersunk Neodymium Disc Magnets – Rare Earth Magnets for #8 Flat Head Screws

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Countersunk Disc Magnet
Grade N52
Shape Disc with Countersunk Center Hole
Diameter 1" (25.4 mm)
Thickness 3/16" (0.1875" / 4.76 mm)
Countersunk Hole 0.355" x 0.195", 82° (One Side)
Compatible Screw #8 Flat Head Screw
Pull Force Over 28 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer
Magnetization Through Thickness
Br Max 14,800 Gauss
Certification ISO Certified

*Note: Actual pull force may vary depending on the application, contact surface, steel thickness, and mounting method. Testing in your specific application is recommended.

Quick Answers

Question Answer
How strong is this magnet? Approximately 28 lbs of pull force under ideal conditions.
What is this magnet made of? NdFeB (Neodymium-Iron-Boron) rare earth material.
Is N52 stronger than N42 magnets? Yes. N52 is the highest commercially available neodymium grade and provides greater magnetic strength than N50, N48, N45, N42, N40, N38, and N35 magnets.
Can it be used outdoors? Yes, but additional sealing is recommended for long-term outdoor or marine environments.
What is it commonly used for? Cabinet doors, woodworking, magnetic fixtures, equipment mounting, industrial machinery, displays, and DIY projects.

Product Overview

These 1" x 3/16" N52 Countersunk Neodymium Disc Magnets combine maximum magnetic strength with secure mechanical mounting. The 1-inch diameter provides a large contact surface for outstanding holding power, while the 3/16-inch thickness creates a deep magnetic field capable of delivering over 28 pounds of pull force.

Each magnet features a 0.355" x 0.195" 82° countersunk center hole on one side, designed to accept a standard #8 flat head screw. The countersunk design recesses the screw head below the magnet surface for a clean, flush installation, making these magnets ideal for cabinetry, woodworking, industrial fixtures, equipment mounting, and custom fabrication.

Manufactured from premium N52 grade NdFeB (Neodymium-Iron-Boron), these magnets deliver the highest commercially available magnetic strength. A durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating protects against corrosion, scratches, and chipping while maintaining a smooth, polished metallic finish.

What Is a Countersunk Neodymium Disc Magnet?

A countersunk neodymium disc magnet is a permanent NdFeB (Neodymium-Iron-Boron) magnet with a precision-machined center hole that allows a flat head screw to sit flush with the magnet surface. This provides a secure mechanical attachment without adhesives while maintaining maximum contact with mating steel surfaces.

This magnet is magnetized through its thickness, placing the north and south poles on the two flat circular faces. Countersunk disc magnets are widely used where both strong magnetic performance and permanent screw mounting are required.

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

How Strong Is This Magnet?

This 1" x 3/16" N52 countersunk disc magnet delivers over 28 pounds of pull force under ideal laboratory conditions using a thick, clean steel surface.

Actual holding force depends on:

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

For maximum performance, install the magnet securely using a #8 flat head screw and use it against a clean, flat steel surface.

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

Technical Specifications

Specification Value
Magnet Type Neodymium Rare Earth Countersunk Disc Magnet
Grade N52
Shape Disc with Countersunk Center Hole
Diameter 1" (25.4 mm)
Thickness 3/16" (0.1875" / 4.76 mm)
Countersunk Hole 0.355" x 0.195", 82° (One Side)
Compatible Screw #8 Flat Head Screw
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Through Thickness
Pull Force Over 28 lbs*
Br Max 14,800 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 resistance to chipping and cracking
  • Outstanding corrosion protection
  • Smooth, polished metallic finish
  • Long-lasting durability for industrial, commercial, and woodworking applications

Magnet Grade Comparison

Grade Relative Strength Typical Applications
N35 Standard General-purpose magnets
N38 Moderate Consumer products
N40 High Industrial applications
N42 Higher Engineering and manufacturing
N48 Extremely High Precision industrial equipment
N52 Maximum Maximum-strength industrial, robotics, and heavy-duty mounting applications

Disc Magnet Size Comparison

Size Typical Use
Small Crafts and lightweight mounting
Medium General-purpose magnetic fixtures
1" x 3/16" Countersunk Cabinetry, woodworking, equipment mounting, industrial fixtures
Large Heavy-duty industrial installations

Applications by Industry

Industry Common Uses
Manufacturing Magnetic fixtures, jigs, production equipment
Woodworking Cabinet doors, hidden catches, furniture
Construction Screw-mounted magnetic holders
Industrial Machinery, removable access panels, equipment mounting
Retail Displays, signage, exhibit fixtures
DIY & Makers Workshop organization, custom builds, storage systems

Common Questions About This Magnet

What is the pull force?

This magnet provides over 28 pounds of pull force under ideal testing conditions.

What size screw fits this magnet?

The 0.355" x 0.195" 82° countersunk hole is designed to fit a #8 flat head screw.

Why is the countersunk hole only on one side?

The single-sided countersink allows the screw head to sit flush with the magnet surface for a clean installation while maintaining maximum contact area on the opposite face.

Is N52 stronger than N42 magnets?

Yes. N52 is the strongest commercially available neodymium grade and provides significantly greater magnetic strength than N42 magnets of the same dimensions.

Can this magnet rust?

The Nickel-Copper-Nickel triple-layer coating provides excellent corrosion protection. If the coating becomes damaged and the magnet is exposed to moisture, corrosion may occur over time.

Can it be used outdoors?

Yes. However, additional sealing is recommended for long-term outdoor, marine, or high-humidity applications.

What direction is it magnetized?

This magnet is magnetized through its 3/16-inch 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 and volume discounts on large quantity orders.

Safety Notice: Neodymium magnets are extremely powerful and can cause pinch injuries or damage electronic devices if handled improperly. Always review and follow appropriate magnet safety guidelines before installation and use.

Why Buy From Super Magnet Store?

  • Premium N52 NdFeB rare earth magnets
  • ISO-certified quality
  • Maximum-strength N52 grade
  • Precision-machined countersunk hole for #8 flat head screws
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Excellent corrosion resistance
  • Consistent magnetic performance
  • Precision manufacturing for reliable results
  • Competitive wholesale pricing
  • Bulk discounts available
  • Trusted by manufacturers, engineers, woodworkers, and DIY professionals worldwide



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