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Pot magnet Ø 40 mm with countersunk hole, holds approx. 52 kg

Item number CSN-40
Strength approx. 52 kg
Displacement force approx. 10 kg
Unit of Sale 1 piece
Price and rebate
1 pc. 8.15 CHF ea.
from 3 pcs. 7.30 CHF ea.
from 10 pcs. 6.55 CHF ea.
from 20 pcs. 6.20 CHF ea.
from 40 pcs. 5.85 CHF ea.
Ask for a rebate from 350 pcs.
incl. VAT plus shipping

8.15 CHF

incl. VAT plus shipping

promptly deliverable

Available: 53'092 pieces

Delivery time: 1-2 business days


  • Orders placed by 12:00 will be shipped today!


Top seller: More than 640'000 sold!
This magnet in a steel pot has a countersunk hole and can be fastened with a countersunk screw. It is especially popular with our customers in the mechanical engineering and construction industry, in electrical engineering, the advertising industry and precision technologies. But it is also often used in private households.

The following screws fit into the CSN-40, for example:

  • Slotted countersunk wood screws: DIN 97 (5 mm)
  • Cross recessed countersunk flat head screws (machine screw): ISO 7046-2 M5 (5 mm)
  • Countersunk torx screws/hexalobular socket (machine screw): ISO 14581 M5 (5 mm)
  • Hexagon socket countersunk flat head screws (machine screw): ISO 10642 M5 (5 mm)

Please note: The full adhesive force is achieved when the ferromagnetic counterpart is smooth and of sufficient thickness and when the pot magnet makes direct and full flush contact. Pot magnets already lose much of their adhesive force at a distance of only half a millimetre to the ferromagnetic surface. This characteristic is more pronounced in pot magnets than in other ferrite and neodymium magnets. You can find additional fascinating information on our FAQ page about pot magnet features.

Technical data

Article ID CSN-40
EAN 7640155431637
Material NdFeB
Pot diameter D 40 mm
Total height H 8 mm
Hole d1 5.5 mm
Countersinking d2 11.7 mm
Countersinking t 3.1 mm
Tolerance +/- 0.1 mm
Coating Nickel-plated (Ni-Cu-Ni)
Steel Q235 (China)
Magnetisation N38
Strength approx. 52 kg (approx. 510 N)
Displacement force approx. 10 kg (approx. 101 N )
Max. working temperature 80°C
Weight 65 g
PDF data sheet
The graph shows the maximum adhesive force in kg (y axis) at various distances in mm (x axis) between pot magnet and counterpart (steel plate).
Example: At a 2 mm distance between pot magnet and steel plate the maximum adhesive force is still around 10 kg.
The answer to why you can arrange pot magnets only side by side can be found under our FAQ.

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Customer applications that use this product