40mm x 40mm x 4mm Neodymium Block Magnet – N52 Grade

Key Features:

Dimensions: 40mm Length × 40mm Width × 4mm Thickness
Precision Tolerance: ±0.05mm
Magnet Grade: N52
Pull Force: Approx. 35.6 lbs
Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
Magnetization: Axially magnetized (Poles on the large 40x40mm flat faces)
Surface Gauss: Approx. 3,850 Gauss

Material Description:

Our 40mm N52 square plates are designed for extreme performance. The broad footprint provides unmatched stability and surface contact, making it nearly impossible for the magnet to shift or rotate under load. At 4mm thick, it possesses the mass required to "reach" through thick barriers or secure heavy equipment. These are widely used in industrial environments for securing heavy panels, creating custom work-holding jigs, and high-efficiency metal debris collection.

Handling Advice: EXTREME DANGER: These magnets are exceptionally dangerous if mishandled. A 62 lb pull force is strong enough to crush fingers or break bones if trapped between two magnets or a steel surface. Never handle these without extreme focus. Always keep them separated by at least 12 inches and use heavy-duty non-magnetic spacers during storage.

Warnings and Safety Information:

Crush Hazard: Serious risk of bone fractures and severe skin pinches. Professional handling recommended.
Medical Safety: KEEP AWAY from pacemakers and medical implants. This field is strong enough to interfere from a distance.
Fragility: Despite its size, neodymium is a brittle ceramic. High-impact collisions WILL result in dangerous high-velocity shards.
Electronics: Keep well away from hard drives, monitors, and sensitive electronic testing equipment.