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    These disc magnets are 0.250 inch (6.4mm) diameter and 0.125 inch (3.2mm) thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 2.7 lbs. Maximum working temperature is 176 F (80 C).

    Part Number NSN0579
    Imperial Dimensions 0.25 inch diameter x 0.125 inch thick
    Metric Dimensions 6.35mm diameter x 3.175mm thick
    Material Sintered Neodymium-Iron-Boron (NdFeB)
    Shape Disc
    Plating Ni-Cu-Ni (Nickel)
    Magnetization Direction Thickness
    Grade N40
    Pull Force (lbs[g]) 2.67[1211]
    Surface Field(G) 3908
    Maximum Operating Temperature 80 Deg C (176 Deg F)
    Dimensional Tolerance +/-0.005"
    Magnet Quantity 40
    Volume (cm3) 0.1
    Weight (g) 0.75
    Brand Magcraft
    Packaging Magpak Tube
    UPC 897970000792
    Remanent Flux Density Br (kG [T]) 12.5-12.8 [1.25-1.28]
    Coercivity HcB (kOe [kA/m]) >=11.3 [>=923]
    Intrinsic Coercivity HcJ (kOe [kA/m]) >=12.0 [>=995]
    Maximum Energy Product Bhmax (MGOe [kJ/m3]) 38-41 [302-326]
    Density p(g/cm3) >=7.45
    Compression Strength (Mpa) 600-1200
    Bending Strength (Mpa) 150-380
    Vickers Hardness (HV) 460-660
    Recoil Permeability (urec) 1.05
    Electrical Resistance (Ohm*mm2/m) 1.25-1.55
    Curie Temperature Tc (°C) 310
    Thermal Expansion Coefficient 100°C//(x10^-6/K) 6
    Thermal Expansion Coefficient 100°C?(x10^-6/K) -1


    RoHS Certificate
    2D CAD Drawing
    Specification Sheet
    IGES CAD File
    STEP CAD File
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