All flat ring magnets and block magnets with countersunk holes can be fastened with countersunk head screw, and given the name of screw-on magnets or screw-in magnets.Due to strong adhesive force, neodymium screw-on magnets are widely used in kitchen installations, booth construction, and shopfitting, signage technology, furniture construction, etc. Neodymium&ferrite pot magnets with counterbore and pot magnets with cylindrical borehole are also perfect for screw-fastening
Neo screw-on Magnets: A special magnet designed for non-magnetic surfaces, it secures and adheres using the principles of magnetic attraction and repulsion when paired with screws.
Typically circular or square with a central screw hole, it requires careful consideration during use:
1. Confirm screw specifications for proper magnet selection.
2. Identify material and thickness of the non-magnetic surface for appropriate magnet size and strength.
3. Consider weight and dimensions of the component for suitable magnet specifications.
During installation, affix the magnet to the non-magnetic surface, then secure the component with screws. Protect the magnet surface from scratches or impacts. In summary, screw hole magnets are convenient, practical, and widely utilized in industrial, electronic, and mechanical fields. Choose the right specifications and follow guidelines for correct installation and usage.
To make them used longer, protection coating needed for the surface of rare earth neodymium(NdFeB) screw-on magnet, Zinc plating, nickel, environmental protection zinc, environmental protection nickel, nickel copper nickel, environmental protection nickel copper nickel,epoxy coating are usually adopted. Rubber or plastic coated neodymium screw-on magnets can be supplied by Meank.
Surface | Coating | Thickness (Microns) | Color | Resistance |
Passivation | 1 | Silver Grey | Temporary Protection | |
Nickel | Ni+Ni | 10-20 | Bright Silver | Excellent Against Humidity |
Ni+Cu+Ni | Good Against Salt Spray | |||
Zinc | Zn | 8-20 | Bright Blue | Excellent Against Salt Spray |
C-Zn | Shinny Color | Superior Against Humidity | ||
Tin | Ni+Cu+Sn | 15-20 | Silver | Superior Against Humidity |
Silver | Ni+Cu+Ag | 10-20 | Silver | Superior Against Humidity |
Gold | Ni+Cu+Au | 10-20 | Gold | Temporary Protection |
Copper | Ni+Cu | 10-20 | Gold | Excellent Against Humidity&Salt Spray |
Epoxy | Epoxy | 15-25 | Black,Red,Grey | Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved |
Ni+Cu+Epoxy | Excellent Against Humidity | |||
Zn+Epoxy | Resistance | |||
Parylene | Parylene | 5-20 | Grey | Excellent Against Humidity |
Chemical | Ni | 10-20 | Silver Grey | Excellent Against Humidity |
Screw-on magnets are usually axially magnetized.That’s to say the poles are located above and below on the circular surface.Please tell us which side is N-pole or S-pole when order screw-on magnets
Screw-on neodymium magnets are widely used magnetic holder in daily life,some size can be used almost everywhere.We can make all types of custom neodymium screw-on magnets,which including rectangular screw-on neodymium magnet blocks,screw-on magnetic disc, waterproof screw-on magnets with plastic or rubber coated.The drawings are usually needed for making screw-on neodymium magnets.
Neodymium Material Grade | MaximumWorking Temp. | Curie Temp. |
N(N35,N38,N40,N42,N45,N48,N50,N52) | 176°F (80°C) | 590°F (310°C) |
N-M(N35M,N38M,N40M,N42M,N45M,N48M,N50M,N52M) | 212°F (100°C) | 644°F (340°C) |
N-H(N35H,N38H,N40H,N42H,N45H,N48H,N50H) | 248°F (120°C) | 644°F (340°C) |
N-SH(N35SH,N38SH,N40H,N42SH,N45SH,N48SH) | 302°F (150°C) | 644°F (340°C) |
N-UH(N28UH,N30UH,N33UH,N35UH,N38UH,N40UH,N42UH) | 356°F (180°C) | 662°F (350°C) |
N-EH(N28EH,N30EH,N33EH,N35EH,N38EH,N40EH) | 392°F (200°C) | 662°F (350°C) |
N-AH(N28AH,N33AH,N35AH,N38AH) | 428°F (230°C) | 662°F (350°C) |
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