1" x 1/2" N52 Countersunk Neodymium Disc Magnets – Rare Earth Magnets for #8 & #10 Flat Head Screws
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Countersunk Disc Magnet |
| Grade |
N52 |
| Shape |
Disc with Dual-Sided Countersunk Center Hole |
| Diameter |
1" (25.4 mm) |
| Thickness |
1/2" (0.500" / 12.7 mm) |
| Countersunk Hole |
0.365" x 0.195", 82° (Both Sides) |
| Compatible Screw |
#8 or #10 Flat Head Screw |
| Pull Force |
Over 60 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 60 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 delivers 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? |
Heavy-duty equipment mounting, woodworking, industrial fixtures, machinery, robotics, magnetic doors, and custom fabrication. |
Product Overview
These 1" x 1/2" N52 Countersunk Neodymium Disc Magnets deliver exceptional magnetic strength while providing the convenience of secure screw mounting. The 1-inch diameter creates a large magnetic contact area, while the substantial 1/2-inch thickness generates a deep magnetic field capable of producing over 60 pounds of pull force under ideal conditions.
Each magnet features a 0.365" x 0.195" 82° dual-sided countersunk center hole, allowing installation with either #8 or #10 flat head screws. The countersunk design on both sides lets you mount the magnet from either face while keeping the screw head recessed below the surface for a clean, professional installation.
Manufactured from premium N52 grade NdFeB (Neodymium-Iron-Boron), these magnets provide the highest commercially available magnetic strength. Combined with a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, they offer excellent resistance to corrosion, scratches, and chipping, making them ideal for demanding industrial, commercial, and workshop environments.
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 designed to accept flat head screws. This allows the magnet to be securely fastened without adhesives while maintaining maximum magnetic holding power.
This model features a dual-sided 82° countersunk hole, allowing installation from either side using #8 or #10 flat head screws. It is magnetized through its thickness, placing the north and south poles on the two flat circular faces.
Neodymium magnets are also commonly known as Neo magnets, NdFeB magnets, NIB magnets, or super magnets.
How Strong Is This Magnet?
This 1" x 1/2" N52 countersunk disc magnet provides over 60 pounds of pull force under ideal laboratory conditions using a thick, clean steel surface.
Actual holding force depends on several factors, including:
- Surface material
- Steel thickness
- Contact area
- Air gap
- Mounting method
- Environmental conditions
For maximum performance, mount the magnet securely using a #8 or #10 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 intended application.
Technical Specifications
| Specification |
Value |
| Magnet Type |
Neodymium Rare Earth Countersunk Disc Magnet |
| Grade |
N52 |
| Shape |
Disc with Dual-Sided Countersunk Center Hole |
| Diameter |
1" (25.4 mm) |
| Thickness |
1/2" (0.500" / 12.7 mm) |
| Countersunk Hole |
0.365" x 0.195", 82° (Both Sides) |
| Compatible Screw |
#8 or #10 Flat Head Screw |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization |
Through Thickness |
| Pull Force |
Over 60 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 outdoor 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 |
Heavy-duty industrial equipment |
| N52 |
Maximum |
Maximum-performance 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 1/2" Countersunk |
Heavy-duty equipment mounting, woodworking, industrial machinery |
| Large |
Maximum-strength industrial installations |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Magnetic fixtures, jigs, production equipment |
| Woodworking |
Cabinet doors, hidden catches, furniture |
| Industrial |
Machinery, removable panels, equipment mounting |
| Robotics |
Positioning systems and magnetic retention |
| Construction |
Screw-mounted magnetic holders |
| DIY & Makers |
Workshop organization, custom fabrication, storage systems |
Common Questions About This Magnet
What is the pull force?
This magnet provides over 60 pounds of pull force under ideal testing conditions.
What size screws fit this magnet?
The 0.365" x 0.195" 82° dual-sided countersunk hole is designed to fit both #8 and #10 flat head screws.
Why is the countersunk hole on both sides?
The dual-sided countersink allows the magnet to be installed from either face while keeping the screw head flush with the surface, providing greater installation flexibility.
Is N52 stronger than N42 magnets?
Yes. N52 is the strongest commercially available neodymium grade and delivers significantly greater magnetic strength than N42 magnets of the same dimensions.
Can this magnet rust?
The Nickel-Copper-Nickel triple-layer coating provides excellent protection against corrosion. If the coating becomes damaged and moisture reaches the magnet, 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 1/2-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 serious pinch injuries or damage electronic devices if handled improperly. Always review and follow 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 dual-sided countersunk hole
- Compatible with #8 and #10 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
