This grade 42 neodymium countersink ring magnet measures 0.500” OD x 0.136” ID x 0.125” THK or 12.7 mm OD x 3.45 mm ID x 6.35 mm THK, with countersunk holes on both sides. Please refer to diagram above.
Double 0.136” (3.45 mm) 82º countersinks, so the magnet is reversible. Perfect for attaching objects to painted surfaces, crafts, signage, displays and more.
Each magnet weighs 0.197 oz (5 gm) & accommodates M4 screws.
Nickel-plated neodymium magnets are made from an alloy of neodymium, iron & boron and are plated with a triple layer of: Ni-Cu-Ni (Nickel-Copper-Nickel) using an electrolytic based process for maximum protection against corrosion & oxidation.
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