NSN0590
12-Count

Rare Earth Magnets - Ring(Countersunk), 0.5 in. Outside Diameter
x 0.15 in. Inside Diameter x 0.125 in. Thick, N,

Rare earth magnets are the strongest type of permanent magnet
currently made. They are amazingly powerful for their size and
have innumerable uses. These countersunk ring magnets are 0.500
inch (12.7mm) outside diameter, 0.150 inch (3.8mm) inside
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.
Maximum working temperature is 176 F (80 C).

SPECIFICATIONS:

Part Number:
NSN0590

Imperial Dimensions:
0.5 inch outside diameter x 0.15 inch inside diameter x 0.125
inch thick

Metric Dimensions:
12.7mm outside diameter x 3.81mm 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]):
3.2[1451]

Surface Field(G):
3531

Maximum Operating Temperature:
80 Deg C (176 Deg F)

Dimensional Tolerance:
+/-0.005"

Magnet Quantity:
12

Volume (cm3):
0.37

Weight (g):
2.75

Brand:
Magcraft

Packaging:
Magpak Tube

UPC:
897970000860

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