NSN0683
Rare-Earth Disc Magnets,
0.75 in. Diameter x 0.0625 in. Thick,
10-Count

SPECIFICATIONS:
These disc magnets are 0.75 inch (19.1mm) diameter and 0.063 inch
(1.6mm) 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 4
lbs. Maximum working temperature is 176 F (80 C).

Part Number
NSN0683
Imperial Dimensions
0.75 inch diameter x 0.0625 inch thick
Metric Dimensions
19.05mm diameter x 1.5875mm thick
Material
Sintered Neodymium-Iron-Boron (NdFeB)
Shape Disc
Plating
Ni-Cu-Ni (Nickel)
Magnetization Direction
Thickness
Grade
N40
Pull Force (lbs[g])
4[1814]
Surface Field(G)
1899
Max. Operating Temperature
80 Deg C (176 Deg F)
Dimensional Tolerance
+/-0.005"
Volume (cm3)
0.45
Weight (g)
3.39

Packaging
Magpak Tube
UPC 875661000832
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