Part Number NSN0587
Imperial Dimensions 0.75 inch outside diameter x 0.2 inch inside
diameter x 0.125 inch thick
Metric Dimensions 19.05mm outside diameter x 5.08mm inside
diameter x 3.175mm thick
Material Sintered Neodymium-Iron-Boron (NdFeB)
Shape Ring
Plating Ni-Cu-Ni (Nickel)
Magnetization Direction Thickness
Grade N40
Pull Force (lbs[g]) 5.8[2631]
Surface Field(G) 3112
Maximum Operating Temperature 80 Deg C (176 Deg F)
Dimensional Tolerance +/-0.005"
Magnet Quantity 6
Volume (cm3) 0.84
Weight (g) 6.3
Brand Magcraft
Packaging Magpak Tube
UPC 897970000891
Remanent Flux Density Br (kG [T]) 12.5-12.8 [1.25-1.28]
Coercivity HcB (kOe [kA/m]) >=10.9 [>=867]
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