8mm x 4mm x 1mm (5/16" x 5/32" x 1/32") Neodymium Block Magnet – N52 Grade 

Key Features:

• Dimensions: 8mm Length × 4mm Width × 1mm Thickness
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52
• Pull Force: Approx. 1.15 lbs 
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating for superior durability
• Magnetization: Axially magnetized through the 1mm thickness (Poles on the large 8x4mm faces)
• Shape: Thin Rectangular Block

Material Description:

Our 8x4x1mm N52 blocks offer a perfect solution for engineering and craft projects requiring a narrow, powerful fastener. The 8mm length provides excellent stability, while the 1mm thickness allows it to be recessed into shallow 3D-printed parts or high-end joinery. The rectangular geometry ensures the magnet resists rotation, making it ideal for "invisible" latches in small electronics and luxury packaging.

Handling Advice: N52 material is exceptionally brittle. Because they are thin and have sharp corners, they can chip if allowed to snap together. Always separate them by sliding the top magnet off the stack horizontally and handle with care using non-magnetic tools.

Warnings and Safety Information:

• Choking Hazard: Small size is 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 covers and small battery compartments
• Hidden magnetic latches for jewelry boxes, wallets, and premium stationery
• Articulation for gaming miniatures and small-scale detail models
• Invisible edge-mounting for lightweight graphics and retail displays
• Custom reed switch activation in confined industrial electronic prototypes