Customized Magnet with Countersunk Hole N40 Block Magnet MOQ200 PCS

Material:Sintered Neodymium Iron Boron Grade:N40 Grade. Tolerance:Standard +/-0.05mm, Min.+/-0.03mm Magnetized through the 5mm thickness, the poles are on the 25x10mm surfaces Nickel-Copper-Nickel triple layer coating for superior durability


Sintered NdFeB magnet; Neodymium Magnet.




Nickel or customized

Tolerance Size

+-0.03mm to +-0.05mm

We could make the magnet according to your designed shape and size.


Coatings for your choose:


Different coating for your selection

CoatingSurface ColourCoating ThicknessApplication Salt Spray Test
ZnBlue White
5~10 MicronsWith high anti-corrosion ability>24 Hour
NiCuNiGlowing Silver15~30 MicronsApplicable to a more harsh environment>48 Hour
EpoxyBlack10~30 Microns
Toy, insulation machinery>300 Hour
GoldGolden5~10 MicronsDecorative, healthy-care>24 Hour

Ref drawing for Countersunk hole :

drawing countersunk.png




  • These magnets are very powerful which should be handled with great care.Do not allow children to play with them unsupervised.

  • Keep the magnets away from pacemakers and magnetic storage devices such as mobile phones, bank cards and computers.


Consultation Contact us

Jin Tong Magnet will join in CWIEME exhibition in Berlin International Convention Center from May 10th to 12th, 2022. Our booth number is 52C01. If you are convenient, we warmly welcome you to visit our booth.