20x6x3mm Mini Square Block Heavy Duty Neodymium Magnets

20×6×3 mm Mini Square Block Heavy Duty Neodymium Magnet

The 20x6x3mm Mini Square Block Heavy Duty Neodymium Magnet is a compact, high-performance NdFeB permanent magnet engineered for strong holding power in tight spaces. Its rectangular block shape provides excellent surface contact and reliable alignment, making it a preferred choice for electronics, robotics, DIY projects, crafts, and educational use.

Key Features

• High magnetic strength from premium Neodymium-Iron-Boron (NdFeB) material for greater pull than similar-size ferrite magnets
• Compact rectangular block: 20 mm × 6 mm surface area with 3 mm thickness for space-constrained designs
• Axially magnetized for predictable, uniform magnetic performance across the faces
• Ni-Cu-Ni nickel plating for corrosion resistance and long service life
• Heavy duty performance for repeated holding, fixing, and alignment tasks
• Typical operating temperature up to 80 °C for standard applications

Technical Specifications

• Type: Neodymium Magnet (NdFeB)
• Shape: Square / Rectangular Block
• Dimensions: 20 mm × 6 mm × 3 mm
• Magnetization: Axially magnetized
• Coating: Nickel (Ni-Cu-Ni)
• Grade: Heavy Duty / High Strength
• Color: Silver
• Operating Temperature: Typically up to 80 °C

Applications

• Electronics and PCB mounting for sensors, enclosures, and small modules
• Robotics and automation systems for fixtures and positional holding
• DIY, hobby, and maker projects including model making and custom enclosures
• Crafts and art installations requiring compact magnetic fixings
• Magnetic locks, holders, jigs, and fixtures in light industrial use
• Educational experiments, demonstrations, and classroom kits
• Precision alignment and small-scale positioning tasks

Advantages

• Strong magnetic pull in a very small footprint
• Rectangular block shape provides stable contact and easier alignment than round magnets
• Durable nickel coating reduces corrosion and surface wear
• Easy to integrate into tight or flat mounting surfaces

Safety and Handling

• Handle with care; strong attraction can cause magnets to snap together and pinch skin
• Keep away from children and from magnetic-sensitive devices such as credit cards, hard drives, and pacemakers
• Avoid exposure to high temperatures, mechanical shock, or drilling which can damage the magnet or coating
• When working with multiple magnets, separate gently using a sliding motion to avoid sudden impact

Installation Tips

• Use a thin adhesive layer or epoxy for mounting to metal and non-metal surfaces; ensure adhesive is compatible with Ni-Cu-Ni coating
• Allow adequate spacing from sensitive electronics or sensors to prevent interference
• For stronger holding, use multiple magnets distributed along the contact surface
• Do not attempt to machine or drill the magnet; special cutting and shaping requires professional equipment

Ordering and Custom Options

Standard stock is available in single units and bulk packs. For custom grades, higher temperature variants, or specific magnetization directions, please contact our sales team for options and lead times.

Note: Images on the site are for illustration purposes only. Actual product size and appearance may vary slightly.