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. Features: 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