Neodymium Ring Magnets
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Neodymium ring magnets have a hole in the middle, so they can slide onto a shaft or pin or be fixed with a screw. Outer diameters range from 6 mm (0.24") to 90 mm (3.54"), from a 6 x 2 x 2 mm (0.24" x 0.079" x 0.079") ring to a 90 x 64 x 5 mm (3.54" x 2.52" x 0.20") ring (outer Ø x inner Ø x height).
Most of the range is countersunk: rings from 8 to 60 mm (0.31" to 2.36") with a tapered hole for a flat-head screw, sold with the countersink on the north or on the south pole so two magnets can be mounted to attract. Many are grade N48, and plastic-coated and epoxy-coated versions are available. Typical tolerance is ±0.1 to 0.2 mm.
US orders ship from our own US stock, free from $50 and with no import duties. Need a steel counterpart? Our countersunk steel washers come in matching sizes for many of the rings. Also see all countersunk magnets and rod magnets.
