4mm x 4mm x 1mm (5/32" x 5/32" x 1/32") Neodymium Square Block – N52 Grade 

Key Features:

• Dimensions: 4mm Length × 4mm Width × 1mm Thickness
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52 
• Pull Force: approx. 0.53 lb
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
• Magnetization: Axially magnetized through the 1mm thickness (Poles on the flat square faces)
• Shape: Small Square Block / Cube

Material Description:

Our 4x4x1mm N52 blocks offer a perfect middle ground for engineering and craft projects. The 4mm square footprint provides a stable, non-slip base for adhesives, while the 1mm thickness provides a much deeper magnetic "reach" than ultra-thin alternatives. These are ideal for flush-mounting into CNC-machined pockets or 3D-printed recesses where a professional, "hidden" look is required.

Handling Advice: N52 material is exceptionally brittle. Because of the sharp corners on square blocks, they are prone to chipping if allowed to snap together. Always separate them by sliding the top magnet off the stack rather than lifting, and handle with care using non-magnetic tools.

Warnings and Safety Information:

• Choking Hazard: Small size is extremely dangerous for children and pets. Keep strictly in a secure container.
• Pinch Hazard: Strong enough to cause minor skin pinches. Handle with a steady grip.
• Medical Safety: Keep away from pacemakers and sensitive medical implants.
• Electronics: Safe for most modern devices at a distance, but avoid direct contact with magnetic storage media.

Applications:

• Precision 3D-printed removable panels and battery covers
• Articulation for high-end gaming miniatures and large-scale models
• Industrial Hall-effect sensor triggers and micro-switches
• Hidden magnetic latches for bespoke jewelry boxes and stationery
• Modular magnetic "tiling" for lightweight display systems