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  • Description
  • Technical
  • Downloads
Strong countersunk ring magnets sized specifically for #4 flat-head screws.

These rings are sold by the pair. One will have the north pole on the side with the large end of the hole and one will have the south pole on that side, so they will attract each other when they are screwed in.

These countersunk rings can be used for a wide range of applications including door closures and tool hangers.

Case1 Pull Force, Case 1 vs. distance: Magnet to a Steel Plate.
Case2 Pull Force, Case 2 vs. distance: Between 2 Steel Plates.
Case3 Pull Force, Case 3 vs. distance: Magnet to Magnet.
Case4 Pull Force, Case 4 vs. distance: Magnet to Magnet Repulsion.
Magnetic Field Click here for a depiction of the magnetic field.
BH Curves View B-H curves for this magnet.

SpecSheet Click here to download a PDF Specification Sheet.
Drawing Click here to download a PDF drawing of this product.
Cert Click here to download a Certificate of Compliance for this product.
RoHS Click here to download a RoHS Statement of Compliance for this product.
MSDS Click here to download a Material Safety Data Sheet (MSDS) for this product.
CMRT Click here to download a Conflict Minerals Reporting Template (CMRT).
Origin Click here to download a Certificate of Origin for this product.
STEP Click here to download a .STEP file (3D model).
IGS Click here to download an .IGS file (3D model).

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 Price: $2.39
 Add to cart
Price ea.Qty
$2.39 1-4
$2.34 5-9
$2.28 10-24
$2.23 25-49
$2.18 50-99
$2.12 100-249
$2.07 250-499
$2.02 500-999
$1.96 1000-2499
$1.91 2500-4999
For pricing at higher order quantities,
please email us!

10% Off
Stepped Block Magnets

20% Off
High Temp
Block Magnets

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or 215-766-8055

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K&J Magnetics, Inc.
Your online source for incredibly powerful neodymium magnets