Magnet Ring - 3/16 inch

Model : MIS-00401

Supplier : SparkFun, USA

TechshopBD, Bangladesh



Green 52 Available

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Summary Magnet Ring - 3/16"

Dimensions: 3/16" (4.7625mm) outer dia x 1/16" (1.5875mm) inner dia x 1/16" (1.5875mm) thick

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.

Click here to know more.


  • Dimensions: 3/16" (4.7625mm) outer dia x 1/16" (1.5875mm) inner dia x 1/16" (1.5875mm) 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
Login to post comments.
SaminPlayz | Feb 18,2018 at 03:37 PM
Permanent magnet?
A.R | Feb 18,2018 at 05:30 PM

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