Channel magnet 40 x 20 x 4 mm

with counterbore, in U-shaped steel profile
currently not deliverable


This screw-on channel magnet is a flat countersunk block magnet with two boreholes, 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: 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 channel magnet.

The following screws fit into the borehole 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)
  • Countersunk torx screws/hexalobular socket (machine screw): ISO 14581 M3 (3 mm)
  • Hexagon socket countersunk flat head screws (machine screw): ISO 10642 M3 (3 mm)

Technical data

Article ID CSR-40-20-04-N
EAN 7640155439480
Material NdFeB
Strength approx. 17 kg (approx. 167 N)
Length S1 40 mm
Length S2 20 mm
Height H 4 mm
Borehole d1 4,5 mm
Countersink d2 9,46 mm
Countersink t 2,48 mm
Distance boreholes 20 mm
Tolerance +/- 0,1 mm
Coating nickel-coated (Ni-Cu-Ni)
Magnetisation N38
Max. working temperature 80°C (possibly lower)
Max. tightening torque 2 Nm
Steel Q235 (China)
Weight 21 g
PDF data sheet

Recommended accessories for this product

5 pcs.  0,47  EUR ea. *
from 15 pcs.  0,41  EUR ea. *
from 40 pcs.  0,37  EUR ea. *
from 80 pcs.  0,35  EUR ea. *
Ask for a rebate from 2 000 pcs.
Available: 640 pcs.