25mm x 5mm x 3mm (1" x 3/16" x 1/8") Neodymium Block Magnet – N52 Grade 

Key Features:

• Dimensions: 25mm Length × 5mm Width × 3mm Thickness
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52
• Pull Force: Approx. 7.3 lbs 
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating 
• Magnetization: Axially magnetized through the 3mm thickness (Poles on the flat 25x5mm faces)
• Shape: Rectangular Power Bar

Material Description:

Our 25x5x3mm N52 blocks are engineered for professional-grade fasteners and high-load DIY projects. The 3mm depth provides a substantial volume of neodymium, generating a deep magnetic field that can act through thick non-magnetic barriers. The rectangular geometry ensures the magnet stays firmly aligned, making it perfect for custom cabinet latches or industrial-strength magnetic triggers.

Handling Advice: At over 7 lbs of pull force, these magnets are powerful. They will jump toward each other from several inches away. Always handle one at a time and separate them by sliding the top magnet off the stack horizontally to avoid chipping the brittle neodymium core or causing painful skin pinches.

Warnings and Safety Information:

• Pinch Hazard: Strong enough to cause painful skin pinches or small blood blisters. Handle with caution.
• Choking Hazard: Small size is dangerous for children and pets. Keep strictly in a secure container.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.
• Electronics: Safe for most modern devices at a distance, but avoid direct contact with hard drives and magnetic strips.

Applications:

• Industrial-strength magnetic latches for cabinetry, secret doors, and hidden panels
• High-performance jigs, fixtures, and non-slip workbench clamps
• Mounting tools and heavy graphics in workshops or retail displays
• Industrial proximity sensors and robust magnetic triggers
• Advanced tabletop gaming (ideal for magnetizing heavy resin terrain)