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Magnet Ring - 3/16"

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Magnet Ring - 3/16"


These are small rare earth magnets – 3/16” rings. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge, and as a trigger for reed switches. This one small ring can easily hold a piece of paper to your fridge.

We found these small rings to be very useful for connecting PCBs together. These rings are conductive and can act as a magnetic connector between widgets. You need a way to secure the ring to the PCB (screws and rivets have been shown to work).

Sold in single units.


  • Dimensions: 3/16” od x 1/16” id x 1/16” thick

  • Tolerances: +-0.002” x +-0.002” x +-0.002”

  • Material: NdFeB, Grade N42

  • Plating/Coating: Ni-Cu-Ni (Nickel)

  • Magnetization Direction: Axial (Poles on Flat Ends)

  • Weight: 0.00665 oz. (0.189 g)

  • Pull Force: 1.48 lbs!

  • Surface Field: 2275 Gauss

  • Brmax: 13,200 Gauss

  • BHmax: 42 MGOe

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