Block magnet 40 x 20 x 4 mm

with countersunk borehole, N35, nickel-plated
promptly deliverable


Block magnets with two countersunk boreholes. They can be fastened with countersunk head-screws. They are only 4 mm thick and therefore very discreet when used to hang up signs, tools, etc. Especially suitable for cabinetmaking, kitchen/booth/store construction, signage technology, etc. We also carry round Countersunk pot magnets screw-on.
Read about more features and tips

Technical data

Article ID CS-Q-40-20-04-N
Material NdFeB
strength approx. 12 kg (approx. 118 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 N35
Max. working temperature 80░C possibly lower)
Weight 22 g
PDF data sheet

Recommended accessories for this product

Countersunk metal disc, 40 x 20 x 3 mm, as a counterpart to magnets, not a magnet!
Countersunk metal disc
40 x 20 x 3 mm, as a counterpart to magnets, not a magnet!
5 pcs. 0,48 EUR ea.

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:
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)