Sintered NdFeB Countersunk magnets Specification: Countersunk Magnets are often used as tools for various activities in workshops and in industry. It is special type of neodymium disc/block magnet with a hole fit for screw. Magnets with countersunk mounting holes allowing them to be screwed in place with the screw head flush. Our factory can provide magnets according to customer's design on shape, dimension, grades, coatings etc.  Max Size: φ3 up to 220mmGrade up to N52, N38EH max. Max. Working Temperature: 250 deg. CCoating: Zn, Ni, NiCuNi, Gold, or Epoxy   Application: These countersunk magnets can be used for a wide range of applications memo,toy,lab , door closures,tool hangers, sensors,magntic hooks, magnetic filter, cup magnet, Automobiles, magnetic coupling, magnetic chuck, permanent magnetic lift, and so on. The Points you may interest: Magnetic Performance, Magnetizing, Coating, Tolerance, Packing, R&D Research, Certificate, advantages