Dimensions: 1/2" od x 1/8" thick with countersunk hole that fits #4 screw
Tolerances: ±0.004" x ±0.004"
Material: NdFeB, Grade N42
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 0.0985 oz. (2.79 g)
Max. Pull Force (generated between a single magnet and a thick, ground, flat steel plate): 5.35 lbs
Max. Pull Force (generated with a single magnet sandwiched between two thick, ground, flat steel plates): 12.30 lbs
Max. Operating Temp: 176°F (80°C)
Brmax: 13,200 Gauss
BHmax: 42 MGOe
These surplus magnets are just like our countersunk magnets, but with a different countersink size and shape. The steep sides of the countersink are a bit odd on this batch, but works well enough with #4 machine screws.
The north pole is on the side of the magnet with the large hole, where the head of the screw would be.
These countersunk rings can be used for a wide range of applications including door closures and tool hangers.
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