MAGCRAFT® NSN0610 - Rare Earth Block Magnets, 0.25 in. Long x 0.25 in. Wide x 0.1 in. Thick, 50-Count

Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These block magnets are one quarter inch long, one quarter inch wide, and one tenth inch thick. They are composed of grade forty neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their maximum working temperature is one hundred seventy six degrees Fahrenheit . Magnets may chip and crack if allowed to snap together. WARNING: Keep out of reach of children. This is NOT a toy. Secure magnets when unattended. Ingestion and inhalation hazard. Ingestion or inhalation may cause injury or death. Seek immediate medical attention if magnets are swallowed or inhaled. Keep magnets in this container when not in use. May affect internal medical devices such as pacemakers. Keep away from internal medical devices. Magnets are brittle. Broken magnets are sharp. May break or ignite if drilled or machined. Do not burn, drill or machine. Magnetic media and electronics hazard. Magnetic material is regulated for air transport. This product does not exceed USDOT and IATA field strength limits as originally packaged.

Material: sintered neodymium-iron-boron (NdFeB) Imperial dimensions: 0.25 inch long x 0.25 inch wide x 0.1 inch thick Metric dimensions: 6.35mm long x 6.35mm wide x 2.54mm thick Shape: Block Plating: Ni-Cu-Ni (nickel) Magnetization direction: Thickness Grade: N40 Pull force: 2.4 lbs Surface field (G): 3304 Maximum operating temperature: 80-deg C (176-degree F) Dimensional tolerance: +/-0.005 in. Magnet quantity: 50