China N40 Rare Earth Permanent Countersunk Magnets,N40 Rare Earth Permanent Countersunk Magnets Manufacturer
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N40 Rare Earth Permanent Countersunk Magnets

  • Product Name:  N40 Rare Earth Permanent Countersunk Magnets
  • Dimension:  OD9.53X3.18mm (OD 3/8"x 1/8" thick) with countersu
  • Magnetization Direction:  Axial (Poles on Flat Ends)
  • Coating:  Ni-Cu-Ni (Nickel)
  • Size:  OD9.53X3.18mm (OD 3/8"x 1/8" thick)
  • Origin:  China ,Ningbo
  • Packing:  Carton/Box/Pallet
  • Brand Name:  Anfeng
  • Delivery Time:  10-25days
  • Minimum Order:  1000pcs
  • Supply Ability:  6,000Ton/Year
  • Product Details:  N40 Rare Earth Permanent Countersunk Magnets

Name:Neodymium Countersunk Magnets
Grade:N40
Dimensions: OD9.53X3.18mm (OD 3/8"x 1/8" thick) with countersunk hole for #4 screw.
Tolerances: ±0.1mm
Material: NdFeB, Grade N40
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Distinctive feature: These magnets can be fastened with a countersunk screw.

Principle: The magnets are embedded in a steel pot. The steel pot increases the adhesive force of the magnet on direct contact with a thick iron surface. If there is no direct contact with the counterpart, or if the steel plate is thin, painted or rough, you can strain it much less.
Shear force: The indicated adhesive force was measured perpendicular to the surface to which the magnet should stick. It takes a lot less strength to move the magnet sideways. Therefore, you can strain a pot magnet much less if you use it on a wall as opposed to using it on the ceiling.
Rust: These magnets are not rust-free and therefore intended for dry indoor use.
Coating/Plating: Nickel Plated . We also can made Zn, NiCuNi,Ag, Au and other special platings and coatings.
Magnetic Characteristics reference table:

N40 Rare Earth Permanent Countersunk Magnets

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