Zn Coated Round Countersunk Magnets

Zn Coated Round Countersunk Magnets
Details:
Shop strong 20x5mm zn coated round countersunk magnets. N52 grade rare earth round countersunk magnets ideal for engineering, mounting, DIY crafts, and tool organization.
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Description
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Product Overview & Application Scenarios

These zn coated round countersunk magnets are well-suited for both commercial and personal applications, delivering a powerful magnetic grip with the convenience of simple screw mounting. They are widely appreciated in industrial and engineering environments, where they fasten panels, connect metal parts, and stabilize equipment with dependable strength. These zn coated round countersunk magnets also excel in household projects, such as building magnetic tool racks, reinforcing heavy doors, or organizing kitchen areas. Beyond that, they serve the retail industry by providing a secure and adjustable method for mounting signage, displays, and shelving. Thanks to their strong holding force and flexible design, these magnets are indispensable across numerous applications.

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Technical Specifications

 

Product Name

zn coated round countersunk magnets

Magnet Grade

N35 (Br ≥11.8 kGs, Hcj ≥12 kOe)

Dimension

16mm x 3.5mm x (5mm Hole)

Dimensional Tolerance

+/-0.04

Operating Temperature

≤80°C (High-temp versions available)

Density

≥7.5 g/cm³

Surface Magnetic Field

3,500 Gs

Magnetic Flux

2.0 mWb (Fluxmeter-tested)

 

Manufacturing Process

 

 

  • High-purity NdFeB alloy melting under vacuum
  • Alloy pulverization via hydrogen decrepitation
  • Fine powder milling under inert atmosphere
  • Powder alignment in a controlled magnetic field
  • Isostatic or die pressing
  • Vacuum sintering and microstructure optimization
  • Aging treatment to stabilize magnetic properties
  • Precision grinding and slicing
  • Surface treatment and corrosion protection
  • Final magnetization and performance testing
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Reliability Testing

 

  • Coastal or marine environments
  • Industrial pollution and corrosive atmospheres
  • High-moisture or chemical-rich conditions
  • Coating adhesion
  • Dimensional stability
  • Magnetic performance retention
  • Visual and structural integrity

These tests ensure the magnets remain dependable even in harsh working environments

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Packaging & Transportation

 

▲Confirm product type, grade, coating, and quantity.

  • Clean and dry magnets prior to packing.
  • Insert non-magnetic separators between magnet layers.
  • Secure magnets with protective wrapping.
  • Pack into reinforced cartons and seal properly.
  • Apply required safety and identification labels.
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Why Choose Us

 

 

Jinconn specializes in magnet manufacturing and magnet assembly solutions. We produce high-performance NdFeB (neodymium iron boron) magnets using carefully selected raw materials, including neodymium, iron, and boron. For specific applications, additional elements may be added to improve performance.

Through controlled production processes and quality management, our magnets deliver strong magnetic performance, corrosion resistance, and long service life.

With solid manufacturing experience and flexible assembly capabilities, Jinconnmagnet provides reliable magnet products and customized solutions for customers across a wide range of industries tic force in compact sizes supports device miniaturization while maintaining reliable performance.

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Customer Service

 

Customer service is at the core of our operations. We stand ready to listen closely to your every need, and whether you require product guidance or after-sales support, we deliver prompt, friendly and efficient solutions. Your satisfaction is always our top priority.

Backed by strong material science expertise, we serve industries including EVs, automation, consumer electronics, robotics, and renewable energy.

 

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