• More than 240 000 orders per year
  • Customer service in 3 languages
The product was added to your shopping cart.
Go to shopping cart

Neodymium pot magnet Ø 20 mm with countersunk hole, holds approx. 8,9 kg


Item number CSN-20
Strength approx. 8,9 kg
Displacement force approx. 1,8 kg
Unit of Sale 1 piece
Price and rebate
1 pc. 3,17 EUR ea.
from 3 pcs. 2,76 EUR ea.
from 10 pcs. 2,40 EUR ea.
from 20 pcs. 2,22 EUR ea.
from 40 pcs. 2,06 EUR ea.
Ask for a rebate from 260 pcs.
incl. VAT plus shipping

3,17 EUR

incl. VAT plus shipping

promptly deliverable

Available: 65 266 pieces

Delivery time: 3-8 business days

Quant.

Description

Top seller: More than 5 600 000 sold!
This magnet in a steel pot has a countersunk hole and can be fastened with a countersunk screw. This is one of our top sellers, thanks to its versatility: It is used in the shopfitting industry as well as in plastics engineering, the automotive industry and mechanical engineering and construction.

The following screws fit into the CSN-20, for example:

  • Slotted countersunk wood screws: DIN 97 (3,5 mm)
  • Cross recessed countersunk flat head screws (machine screw): ISO 7046-2 M3 (3 mm)
  • Hexalobular socket countersunk flat head screws (machine screw): ISO 14581 M3 (3 mm)
  • Hexagon socket countersunk flat head screws (machine screw): ISO 10642 M3 (3 mm)

Neodymium magnets are brittle and can break under excessive application of force. Therefore, we recommend a maximum tightening torque of 2 Nm when fastening this magnet.

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-20
EAN 7640155431606
Material NdFeB
Pot diameter D 20 mm
Total height H 6 mm
Hole d1 4,5 mm
Countersinking d2 9,46 mm
Countersinking t 2,48 mm
Tolerance +/- 0,1 mm
Coating Nickel-plated (Ni-Cu-Ni)
Steel Q235 (China)
Magnetisation N38
Strength approx. 8,9 kg (approx. 87,3 N)
Displacement force approx. 1,8 kg (approx. 17,5 N )
Max. working temperature 80°C
Colour Silver-coloured
Shape Disc
Design With countersunk hole
Weight 11 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 1 mm distance between pot magnet and steel plate the maximum adhesive force is still 2 kg.
Here you can see the difference between a CSN and a CSN-ES magnet. Although both types have similar dimensions on the outside, the CSN-ES has a thicker steel pot (in grey) and a slightly smaller magnet. This leads to an overall stronger adhesive force, despite the smaller magnet, because the metallic adhesive surfaces are larger.
Since the new CSN-ES magnet is too strong for some of our customers, we also offer the somewhat weaker CSN-alternative.
The answer to why you can arrange pot magnets only side by side can be found under our FAQ.
Here you can see 5 sizes of CSN magnets stacked on top of each other - from top to bottom:
  • CSN-16

  • CSN-20

  • CSN-25

  • CSN-32

  • CSN-40

The structure of pot magnets


Pot magnets have a neodymium or ferrite magnet built into a steel pot. When it comes into direct contact with a surface, its force will be focused on the holding surface as a result. This increases the adhesive force of the magnet. For more information, please refer to our FAQ page on the characteristics of pot magnets.

Recommended accessories for this product

Load...
to protect surfaces
10 pcs. 0,26 EUR ea.*
from 40 pcs. 0,22 EUR ea.*
from 80 pcs. 0,21 EUR ea.*
from 160 pcs. 0,19 EUR ea.*
Ask for a rebate from 2 500 pcs.
Available: 119 780 pcs.
metal discs self-adhesive Ø 20 mm, as a counterpart to magnets, these are not magnets!
10 pcs. 0,34 EUR ea.*
from 40 pcs. 0,29 EUR ea.*
from 80 pcs. 0,26 EUR ea.*
from 160 pcs. 0,24 EUR ea.*
Ask for a rebate from 1 900 pcs.
Available: 29 430 pcs.
to protect surfaces, 36 per set
1 set 4,61 EUR/set*
from 3 sets 4,06 EUR/set*
from 10 sets 3,57 EUR/set*
from 20 sets 3,33 EUR/set*
from 40 sets 3,13 EUR/set*
Ask for a rebate from 1 000 sets
 
metal discs with an edge and countersunk hole M3, inner diameter 21 mm, as a counterpart to magnets, these are not magnets!
Counteracts shear force.
10 pcs. 1,48 EUR ea.*
from 20 pcs. 1,40 EUR ea.*
from 40 pcs. 1,33 EUR ea.*
Ask for a rebate from 3 000 pcs.
Available: 530 pcs.
metal discs with countersunk hole Ø 23 mm, as a counterpart to magnets, these are not magnets!
10 pcs. 0,39 EUR ea.*
from 40 pcs. 0,33 EUR ea.*
from 80 pcs. 0,31 EUR ea.*
from 160 pcs. 0,29 EUR ea.*
Ask for a rebate from 2 500 pcs.
Available: 25 680 pcs.