N52 Super Strong Neodymium Magnets Rings and Countersunk Rings General Specifications:Plating/Coating: Ni-Cu-Ni (Nickel) Magnetization Direction: Axial (Poles on Flat Ends)Max Operating Temp: 176ºF (80ºC) Material Features: Neodymium Magnets are made of a brittle material (NDFEB). These magnets are not as strong as steel, they are more like a brittle ceramic. If you let two magnets slam together, they can crack and break, this is true for magnets large and small. Countersunk Magnets : Ring 5x3mm Hole 2mm N52 (countersunk to N or S Pole):Diameter 5mm X 3mm thick Hole 2mm (approx. 3/16″ x 1/8″ Hole 5/64″) | Pull Force: Approx. 0.94 lb Ring 6x3mm Hole 2mm N52 (countersunk to N or S Pole):Diameter 6mm X 3mm thick Hole 2mm (approx. 1/4″ x 1/8″ Hole 5/64″) | Pull Force: Approx. 1.36 lb Ring 7x4mm Hole 2mm N52 (countersunk to N or S Pole):Diameter 7mm X 4mm thick Hole 2mm (approx. Dia 9/32in x 5/32in hole 5/64″) | Pull Force: Approx. 3 lb Ring 8x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 8mm X 3mm thick Hole 3mm (approx. Dia 1/3″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 3.45 lb Ring 10x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 10mm X 3mm thick Hole 3mm (approx. Dia 3/8″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 3.5 lb Ring 12x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 12mm X 3mm thick Hole 3mm (approx. Dia 1/2″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 5.75 lb Ring 12x5mm Hole 4mm N52 (countersunk to N or S Pole):Diameter 12mm X 5mm thick Hole 4mm (approx. Dia 1/2″ x 3/16″ thick Hole 5/32″) | Pull Force: Approx. 7.5 lb Ring 15x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 15mm X 3mm thick Hole 3mm (approx. Dia 19/32″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 8.5 lb Ring 15x4mm Hole 4mm N52 (countersunk to N Pole):Diameter 15mm X 4mm thick Hole 4mm (approx. Dia 19/32″ x 5/32″ thick Hole 5/32″) | Pull Force: Approx. 10.5 lb Ring 18x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 18mm X 3mm thick Hole 3mm (approx. Dia 45/64″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 10.5 lb Ring 20x3mm Hole 3mm N52 (countersunk to N or S Pole):Diameter 20mm X 3mm thick Hole 3mm (approx. Dia 25/32″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 11.5 lb Ring 20x5mm Hole 5mm N52 (countersunk to N or S Pole):Diameter 20mm X 5mm thick Hole 5mm (approx. Dia 25/32″ x 3/16″ thick Hole 3/16″) | Pull Force: Approx. 19 lb Ring 25x3mm Hole 4mm N52 (countersunk to N or S Pole):Diameter 25mm X 3mm thick Hole 4mm (approx. Dia 1″ x 1/8″ thick Hole 5/32″) | Pull Force: Approx. 13.5 lb Ring 25x5mm Hole 5mm N52 (countersunk to N or S Pole):Diameter 25mm X 5mm thick Hole 5mm (approx. Dia 1″ x 3/16″ thick Hole 3/16″) | Pull Force: Approx. 26.5 lb Ring 50x5mm Hole 6mm N52 (countersunk to N Pole):Diameter 50mm X 5mm thick Hole 6mm (approx. Dia 2″ x 3/16″ thick Hole 1/6″) | Pull Force: Approx. 45 lb Magnet Rings:Ring 7x4mm Hole 2mm N52:Diameter 7mm X 4mm thick Hole 2mm (approx. Dia 3/8″ x 1/8″ thick Hole 1/8″) | Pull Force: Approx. 3 lb Ring 12x5mm Hole 4mm N52:Diameter 12mm X 5mm thick Hole 4mm (approx. Dia 1/2″ x 3/16″ thick Hole 5/32″) | Pull Force: Approx. 7.5 lb Ring 15x4mm Hole 4mm N52:Diameter 15mm X 4mm thick Hole 4mm (approx. Dia 19/32″ x 5/32″ thick Hole 5/32″) | Pull Force: Approx. 10.5 lb Ring 32x5mm Hole 5mm N52:Diameter 32mm X 5mm thick Hole 5mm (approx. Dia 1.26″ x 3/16″ thick Hole 3/16″) | Pull Force: Approx. 30 lb Ring 38x5mm Hole 5mm N52:Diameter 38mm X 5mm thick Hole 5mm (approx. Dia 1.5″ x 3/16″ thick Hole 3/16″) | Pull Force: Approx. 34 lb WARNING! The neodymium magnets we sell are extremely strong, and must be handled with care to avoid injury and damage. Fingers can get severely pinched between two attracting magnets. Neodymium magnets are brittle, and can peel, crack or shatter if allowed to slam together. Eye protection should be worn when handling these magnets, because shattering magnets can launch pieces at great speed.The strong magnetic fields of these magnets can damage magnetic media such as floppy discs, credit cards, magnetic ID cards, cassette tape, videotapes and similar items. They can also damage televisions, VCRs, computer and CRT monitors and other electronics. Never place neodymium magnets near any of these items.Children should not be allowed to handle neodymium magnets, as they can be dangerous. These magnets are not toys. Small magnets risk a chocking hazard and should never be swallowed or inserted into any part of the body. Never allow neodymium magnets near a person with a pacemaker or similar medical devices. The strong magnetic fields can affect the operation of such devices.Neodymium magnets are brittle and prone to chipping and cracking. They do not take kindly to machining. Neodymium magnets should never be burned, as burning them will create toxic fumes.————————————————-Shipping:Free standard shipping for all USA orders We ship from Brooklyn New York
