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

Neodymium channel magnet 80 x 20 x 4 mm, holds approx. 37 kg

with two countersunk holes, in U-shaped steel profile

Item number CSR-80-20-04-N
Strength approx. 37 kg
Displacement force approx. 7.4 kg
Unit of Sale 1 piece
Price and rebate
1 pc. 7.75 CHF ea.
from 3 pcs. 6.95 CHF ea.
from 10 pcs. 6.25 CHF ea.
from 20 pcs. 5.90 CHF ea.
from 40 pcs. 5.55 CHF ea.
Ask for a rebate from 300 pcs.
incl. VAT plus shipping

7.75 CHF

incl. VAT plus shipping

promptly deliverable

Available: 5'572 pieces

Delivery time: 1-2 business days


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


This screw-on channel magnet is a very long flat countersunk block magnet with two holes, embedded in a U-shaped steel profile. With direct contact, the steel significantly strengthens the magnet's adhesive force and at the same time protects it from blows. Its minimal thickness of only 4 mm allows for inconspicuous magnetic mounting of signs, tools and more. It is especially suitable for carpentry, kitchen installations, exhibition stand construction, shopfitting, signage technology, etc.

Please note: Not all holding surfaces are level, which is why magnets need a little slack. This allows them to optimally align with the ferromagnetic object and extend the highest adhesive force. That is why we recommend fastening these magnets by hand.

The following screws fit into the hole of these magnets, for example:

  • Slotted countersunk wood screw: 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)

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 CSR-80-20-04-N
EAN 7640155439459
Material NdFeB
Strength approx. 37 kg (approx. 363 N)
Displacement force approx. 7.4 kg (approx. 72.6 N )
Colour Silver-coloured
Shape Block
Product version With countersunk hole
Length S1 80 mm
Length S2 20 mm
Height H 4 mm
Hole d1 4.5 mm
Countersink d2 9.46 mm
Countersink t 3 mm
Distance holes 40 mm
Tolerance +/- 0.1 mm
Coating Nickel-coated (Ni-Cu-Ni)
Magnetisation N38
Visible side of the magnet North pole
Max. working temperature 80 °C (possibly lower)
Max. tightening torque 2 Nm
Steel Q235 (China)
Weight 44 g
PDF data sheet

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

metal plates with two countersunk holes 80 x 20 x 3 mm, as a counterpart to magnets, these are not magnets!
5 pcs. 0.87 CHF ea.*
from 15 pcs. 0.79 CHF ea.*
from 40 pcs. 0.74 CHF ea.*
from 80 pcs. 0.70 CHF ea.*
Available: 690 pcs.

Customer applications that use this product