20mm x 10mm x 5mm Neodymium Block Magnet – N52 Grade

Key Features:

• Dimensions: 20mm Length × 10mm Width × 5mm Thickness
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52
• Pull Force: Approx. 16.3 lbs 
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
• Magnetization: Axially magnetized through the 5mm thickness (Poles on the 20x10mm faces)
• Shape: Rectangular Thick Block

Material Description:

Our 20x10x5mm N52 blocks are engineered for maximum performance. With a 5mm depth, these magnets generate a massive magnetic flux density, allowing them to provide a secure hold even through non-magnetic gaps or thick layers of material. The 20mm length offers a large surface area for adhesive bonding, while the rectangular profile ensures the magnet resists twisting or rotation in high-torque applications.

Handling Advice: DANGER: These magnets are exceptionally powerful. With nearly 16 lbs of pull force, they can cause serious injury if allowed to snap onto fingers or skin. They will attract other magnets from several inches away with enough force to shatter on impact. Always handle one at a time and use spacers when storing them.

Warnings and Safety Information:

• Crush Hazard: Can cause painful skin pinches or blood blisters. Wear protective gloves when handling multiple units.
• 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.
• Brittleness: Neodymium is a ceramic; high-impact collisions will cause shattering.

Applications:

• Heavy-duty magnetic latches for cabinetry, secret doors, and hidden structural panels
• Industrial-strength jigs, fixtures, and non-slip workbench clamps
• Magnetic filtration and metal debris collection in workshops
• Custom high-torque magnetic couplings and motor prototypes
• Mounting heavy tools, knives, or equipment to steel shelving