N52 Strong Countersunk Hole Magnets Ni-Cu-Ni Plated for Industrial Fastening

N52 magnets are among the strongest grades of rare earth magnets available for commercial applications. With a high magnetic energy product, these magnets provide strong holding force while maintaining a compact size.The vacuum sintering process improves the magnetic structure and ensures stable magnetic performance. Even after long-term use, the magnets maintain reliable holding strength.Each magnet is tested to ensure resistance to demagnetization in demanding applications.

• Precision Design of Countersunk Hole Magnets

These countersunk hole magnets are designed with a 90-degree recessed hole, allowing screws to sit flush with the magnet surface for clean and secure installation.

Precise machining ensures accurate hole dimensions and stable installation performance.

Compared with standard disc magnets, countersunk magnets provide better mechanical integration and are widely used in cabinetry, machinery, robotics, and industrial fixtures.

• Durable Ni-Cu-Ni Triple-Layer Coating

The magnets feature a Ni-Cu-Ni (Nickel-Copper-Nickel) triple-layer coating for improved corrosion resistance and surface durability.

The coating includes a nickel base layer, copper intermediate layer, and outer nickel finish, creating a smooth and bright surface.

This protective coating helps the magnets resist moisture, oxidation, and wear in industrial environments. Standard products can pass 72-hour salt spray testing.

The coating also helps protect the NdFeB core from corrosion and impact damage.

• Practical Applications of NdFeB Recessed Magnets

NdFeB recessed magnets provide a practical alternative to adhesives and traditional mechanical fasteners. They can be mounted easily onto non-magnetic materials using standard screws.

The recessed design protects the screw head and reduces wear during repeated attachment and removal.

These magnets are commonly used for cabinet doors, display fixtures, automotive interiors, electronic equipment, and industrial mounting systems.

Available in different pole orientations, the magnets can also be paired to create secure magnetic closures.

• Strict Quality Control & International Standards

All magnets are produced under strict quality management procedures. Each product is inspected using digital measuring tools and magnetic flux testing equipment to ensure stable performance.

The products comply with international transportation and environmental standards, including proper magnetic shielding for air shipment safety.

Technical specifications such as Br, Hcb, and Hcj values are available upon request.

Whether for small projects or large industrial orders, these countersunk magnets provide a reliable and efficient fastening solution.