Block magnet 20 x 20 x 4 mm

with countersunk borehole, N35, nickel-plated
promptly deliverable


Block magnets with a square base area and a countersunk borehole. They can be fastened with a countersunk head screw. They are only 4 mm thick and therefore very discreet for hanging up signs, tools, etc. Especially suitable for cabinetmaking, kitchen installations, booth and store construction, signage technology, etc. We also carry round Pot magnets with counterbore screw-on.

The following screws fit into the borehole of these magnets:
  • Countersunk wood screw with groove: DIN 97 (3,5 mm)
  • Recessed countersunk flat head screws (machine screw): ISO 7046-2 M3 (3 mm)
  • Countersunk torx screws (machine screw): ISO 14581 M3 (3 mm)
  • Hexagon socket countersunk flat head screws (machine screw): ISO 10642 M3 (3 mm)
Read about more features and tips

Technical data

Article ID CS-Q-20-20-04-N
EAN 7640155431415
Material NdFeB
Strength approx. 7,5 kg (approx. 73,5 N)
Length S1 20 mm
Length S2 20 mm
Height H 4 mm
Borehole d1 4,5 mm
Countersink d2 9,46 mm
Countersink t 2,48 mm
Tolerance +/- 0,1 mm
Coating nickel-coated (Ni-Cu-Ni)
Magnetisation N35
Max. working temperature 80°C (possibly lower)
Weight 11 g
PDF data sheet

Recommended accessories for this product

10 pcs.  0,36  EUR ea. *
from 40 pcs.  0,31  EUR ea. *
from 80 pcs.  0,27  EUR ea. *
from 160 pcs.  0,26  EUR ea. *
Ask for a rebate from 2 500 pcs.
Available: 2 030 pcs.

Additional features and tips

Click to enlarge
Neodymium magnets are very brittle and can break or chip when exposed to repeated blows. To protect the magnets it would be best to slightly countersink them into a material (e.g. into the wood of the furniture).

Click to enlarge
An overview of all countersunk block magnets: