Custom Neodymium Block Magnet Permanent NdFeB Magnets With Countersunk Hole For Sale

Neodymium Block Countersunk Magnets are made of a powerful Neodymium magnet sunken in to a stainless steel shell meaning that the north pole is on the center of the magnetic face and the south pole is on the outer edge around it. The stainless steel pot increases the adhesive force of the magnets giving them an incredible hold for their size and also increases their resistance to corrosion. An added advantage of block magnets is that they are resistant to chipping or cracking following constant impact with a steel surface. These magnets are counter-bored on the magnetic face and can be fixed to a surface with a screw, block magnets are also available with countersinks and threaded studs.

Specifications:

NdFeB Countersunk block magnets

Shape: Block

Size: 50mm length x 20mm width x 5mm thickness

Countersunk hole diameter: 2 countersunk holes  D8/D4

Grade: N42

Coating: Nickel

Magnetised thru thickness 5mm

Features:

This large and powerful Neodymium block magnet has two countersunk holes that allow it to be attached permanently in place with screws or to attach an eyelet to guide wiring or alternatively to attach a string, creating a metal retrieval or pickup tool.

It is most commonly used in magnetic closure systems for doors and drawers where it attracts metal surfaces or a striker plate and secures them. 

It can also be attached with screws to any item so that item will attach to metal surfaces in workshops, factories, the home or office. 

By screwing the magnet onto plastic, timber or other materials, the item becomes magnetic and can attach to machinery, shelving, steel fire doors, shipping containers, railings and staircases Countersunk holes make this magnet simple and easy to attach in the correct location.

We can also custom manufacture neodymium block magnets to your exact specifications, just send us a special request and we'll help you determine the most cost effective solution for your project.

Super Strong Neodymium Counter Bore Countersunk Hole Magnets Countersunk Rectangular Base Magnets With Mounting Screws

Applications

Powerful neodymium countersunk block magnets provide an easy way to securely affix magnets to a surface such as wood or plastic using a screw. Countersunk block magnets are ideal for signage, woodworking, and cabinet making as well as for creating magnetic fasteners, latches, and closures.

FAQ:

Q1. What is a magnet with a hole called?

A1. Countersunk Magnets, also known as Round Base, Round Cup, Cup or RB magnets, are powerful mounting magnets, built with neodymium magnets in a steel cup with a 90° countersunk hole on the working surface to accommodate a standard flat-head screw.

Q2. Can you drill a hole in a neodymium magnet?

A2. Drilling or sawing of neodymium magnets is not recommended for the following reasons: The material is brittle and fragile. Drilling causes combustible dust. The heat caused by the drill can possibly demagnetise the material.

Q3. What makes neodymium stronger?

A3. Neodymium magnets are so strong because of their high resistance to demagnetisation (coercivity) and their high levels of magnetic saturation allowing them to generate large magnetic fields. A magnet's strength is represented by its maximum energy product value (BHmax) which is measured in Mega Gauss Oersteds (MGOe).

Q4. Do you provide samples ? is it free or extra ?

A4. Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q5. What is your terms of payment ?

A5. Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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