Counterbore Neodymium Magnets

To install a counterbore magnet, you will need a screw or bolt that fits the counterbore size. Place the magnet in the desired location, align the hole with the pre-drilled hole in the attaching surface, and insert the screw or bolt. Tighten until the head of the screw is flush with the magnet surface, being careful not to over-tighten and damage the magnet.

Counterbore magnets can indeed be stacked to enhance their collective magnetic force. For instance, by stacking two magnets each with a 10mm thickness, you can achieve approximately 80% of the pull force you would get from a single 20mm thick magnet. This incremental increase in pull force continues as you add more magnets, up until the point where the total thickness of the stack surpasses the diameter of the magnets.

Absolutely, we can custom manufacture counterbore magnets to meet specific dimensions and to fit particular screws or bolts as per client specifications.

To remove a counterbore magnet that’s been installed, first remove the bolt or screw that’s holding it in place. If the magnet is fixed to a metal surface and proving difficult to detach, try attaching a large stack of magnets to the one you want to remove, then apply steady pressure at an angle to pry them all away from the surface together. This will provide enough leverage to remove the magnets with much less force. When using this method, it’s important to wear safety gloves and follow appropriate precautions for safe handling.

For custom counterbore magnet orders, our turnaround time is exceptionally fast. We typically expect to complete orders within 15 business days.

To properly fit counterbore magnets, choose a bolt or screw slightly smaller than the counterbore’s diameter – these measurements are shown on our product pages. For screws, Phillips head cap screws or socket head cap screws are ideal choices due to their flat tops that allow for a flush finish with the magnet surface. While we recommend stainless steel fasteners for their corrosion resistance and strength, you may select the material based on your specific environment.