12mmx5mm Thick with 4mm Countersink Hole Neodymium Disc Countersunk Ring Magnets with Countersunk Hole for #4 Screw

12mm x 5mm thick with M#4 Countersunk Hole N38 Neodymium Rare Earth Countersunk Ring Magnets Nickel Plated Neodymium Disc Magnet With #3 Countersink for Sale Walmart

• Metric Size: 12 mm diameter x 5 mm thickness with countersunk hole for #4 screw
• Screw Size: 4mm
• Magnetic Face: 12mm diameter face
• Pull Force: approx. 0.91 kg
• Magnets Type: Permanent
• Material: NdFeB, Neodymium
• Grade: N35
• Plating/Coating: Nickel-Plated (Ni-Cu-Ni)
• Magnetization Direction: Axially – Pair (Poles on Flat Ends)
• Weight: 3.8 g/piece
• Max Operating Temp: 176°F (80°C)
• Tolerance: +/-0.1 mm
• Surface Field: 3059 Gauss
• Production: Sintered
• Warning: NEODYMIUM MAGNETS ARE NOT SAFE FOR CHILDREN.

strong neodymium countersunk disc magnets are best for securely attaching magnets on to both magnetic and non-magnetic surfaces including wood, plastic, brass, copper, rubber and aluminum.

The countersunk hole enables a standard screw to be flush mounted into the magnet to securely fasten it into doors, cabinets, chests, toolboxes, displays, signs, panels, art frames and other hidden closure or attachment applications. Closures can involve a pair of magnets with the countersunk holes on opposing poles or one magnet and a steel disc.

Strong countersunk ring magnets sized specifically for flat-head screws.  The north pole is on the side of the magnet with the large hole, where the head of the screw would be.

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