Matched Pair 20mm OD x 5.2mm ID x 4mm Thick Countersunk with Screws

Matched Pair (Both countersunk faces attract) and supplied with mounting screws 


Dimensions: Ø 20mm (Outer diameter)  x  4mm (Thickness),  Ø 5.2mm (Internal countersunk hole diameter)
The dimensions of the product are measured in metric units, with an approximate "tolerance" (manufacturing margin of error) of +/- 0.05mm

   

Pull Strength: 5kg
The approximate force (in metric units) required to remove a magnet from industry-standard 3mm thick mild steel. These "strengths" are measured using mathematical calculations, and should be used as a general guide only.    

Direction of Magnetism: "Axially"
Magnetised (top to bottom) thru 4mm thickness. The axis through which a product is magnetised.   

Gauss: 3,594
A measurement of surface "magnetic induction" (B), equal to one ten-thousandth of a Tesla. Gauss indicates the number of lines of magnetic flux per square centimetre, under the CGS metric system.    

Grade: N42
In permanent magnets, the grade refers to the materials used in the production process. Material "grades" range from low end (weaker) to high end (stronger). See more about magnet grades at our Help Centre.     

Features:
- Specifically sized with countersunk hole, to be used with countersunk head screws (supplied).
- Powerful Rare Earth (Neodymium) permanent magnet.
- High gloss Nickel coating, for protection against corrosion.
- Maximum operating temperature 80°C / 100°C    

Order Units: Sold as a pair (with screw)
Bulk discounts available on orders of 500 pairs or more.