Select a mounting magnet by its fixing geometry and contact arrangement. Countersunk, pot and rubber coated magnets can overlap, so check the specific product.
Countersunk magnets
A countersunk hole provides a recess for a compatible screw head. Check the outside dimensions, bore size and countersink shape against the screw and supporting part. Plain ring magnets and countersunk magnets are different geometries. If using two magnets together, establish which faces must attract before fixing them in position.
Pot magnets
A pot magnet combines a magnet with a surrounding steel housing. Catalogue options may have a bore, threaded socket, stud, hook or other attachment. Check the product drawing and contact face rather than choosing by outside diameter alone.
Rubber coated magnets
A rubber coating changes the contact surface and can help protect a finish. Confirm the overall dimensions and thread or attachment. Performance on a painted, textured or contaminated surface must be tested; do not assume a coating makes every load arrangement suitable.
Questions to answer before ordering
- Which fastener, thread or hole does the assembly need?
- Is the mating surface flat, curved or textured?
- Will the load pull away, slide sideways or rotate the magnet?
- What gap or coating lies between the magnetic parts?
- Can the mounting structure resist the expected forces?
Compare countersunk magnets, pot magnets and rubber coated magnets. Use the magnet strength guide to interpret pull figures, and contact Magnets Direct with the mounting details and quantity for a trade enquiry.