# Magnet Ring - 3/16"

**Type:** Product page · **SKU:** COM-08914 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/magnet-ring-3-16.html ([markdown](https://core-electronics.com.au/magnet-ring-3-16.html.md))

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.

## Pricing

- **Price:** $1.90 (inc GST) — $1.73 AUD, exc GST
- **Quantity discounts:** 5+ $1.67 (exc GST) · 25+ $1.64 (exc GST) · 100+ $1.57 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## Description

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.

Sparkfun 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

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/a/magnet_ring_-_3_16_inch__com-08914__01.jpg)