Neodymium Rectangular Pot Magnet with Countersunk Holes – 20mm (L) x 13.5mm (W)

The Neodymium Rectangular Pot Magnet with Countersunk Holes – 20mm (L) x 13.5mm (W) is a compact rare earth mounting magnet measuring 20mm long x 13.5mm wide. Featuring a Neodymium Iron Boron (NdFeB) magnetic element within a rectangular pot-style housing, this magnetic assembly includes countersunk mounting holes for mechanical fixing with compatible countersunk fasteners.

Also known as a rectangular neodymium mounting magnet, countersunk rectangular pot magnet, rare earth channel magnet or screw-fix magnetic holder, this compact magnet is suited to fixtures, displays, signage, furniture, cabinetry, product assemblies, manufacturing equipment and custom OEM applications.

The surrounding pot-style construction forms part of the magnetic circuit and helps direct and concentrate magnetic flux towards the primary working face, while the countersunk mounting design provides a practical method for securely incorporating the magnet into a product or structure.

Key Features

• 20mm length x 13.5mm width
• Compact rectangular pot magnet
• Neodymium Iron Boron (NdFeB) rare earth magnetic material
• Countersunk mounting holes
• Designed for mechanical screw fixing
• Pot-style construction helps concentrate magnetic flux towards the working face
• High magnetic performance relative to size
• Suitable for magnetic holding and positioning
• Useful for removable magnetic connections
• Suitable for fixtures, signage and displays
• Useful for furniture and product assemblies
• Permanent magnetic operation
• No electricity or batteries required
• Suitable for custom and OEM applications

Common Applications

• Fixtures and jigs
• Displays and signage
• Furniture and cabinetry
• Product assemblies
• Magnetic closures
• Removable panels
• Retail displays
• Exhibition equipment
• Manufacturing
• Machinery
• Engineering projects
• Positioning systems
• Custom mounting solutions
• OEM products

Compact 20mm x 13.5mm Rectangular Pot Magnet

This rectangular pot magnet has the following supplied dimensions:

• Length: 20mm
• Width: 13.5mm

Its compact rectangular footprint makes it suitable for integration into smaller products, fixtures and mounting systems where a conventional round pot magnet may not suit the available installation geometry.

The overall thickness or height of this particular magnet has not been supplied and should not be assumed.

What Is a Rectangular Neodymium Pot Magnet?

A neodymium pot magnet combines high-performance NdFeB magnetic material with a surrounding housing that forms part of the magnetic circuit.

Unlike a standard exposed neodymium block magnet, a pot-style assembly is designed to help direct and concentrate magnetic flux towards a primary working face.

This makes rectangular pot magnets particularly useful for:

• Magnetic mounting
• Holding
• Positioning
• Locating
• Removable attachment
• Product integration

The surrounding structure also provides some mechanical protection to the magnetic element, although the assembly should still be protected from excessive impact and mechanical stress.

Countersunk Screw Mounting

The integrated countersunk holes allow the rectangular pot magnet to be mechanically secured using appropriately sized countersunk fasteners.

This type of mounting can be useful for:

• Fixtures
• Signage
• Displays
• Furniture
• Equipment
• Product housings
• Removable components
• Custom magnetic assemblies

A countersunk fastener is designed to sit within the recessed mounting feature, helping provide a neat mechanical installation.

The specific number of countersunk holes, hole diameters and compatible screw sizes have not been supplied and should be confirmed before installation.

Avoid Overtightening Countersunk Fasteners

Care should be taken when mechanically installing neodymium pot magnets.

Neodymium Iron Boron is a hard and brittle magnetic material, and excessive tightening can introduce damaging mechanical stress.

During installation:

• Use appropriately sized countersunk fasteners
• Ensure the mounting surface is flat
• Align the fasteners correctly
• Tighten gradually
• Do not overtighten
• Avoid forcing the magnet against an uneven mounting surface
• Avoid unnecessary impact during installation

The fasteners should secure the assembly without placing excessive pressure on the magnet or housing.

Neodymium Iron Boron Rare Earth Magnet

Neodymium Iron Boron (NdFeB) is one of the strongest commercially available permanent magnetic materials.

Its high magnetic performance relative to volume makes neodymium particularly suitable for compact pot magnets and mounting assemblies.

Neodymium pot magnets are commonly used in:

• Engineering
• Manufacturing
• Fixtures and jigs
• Displays
• Furniture
• Machinery
• Product manufacturing
• Custom OEM systems

The specific NdFeB magnetic grade of this product has not been supplied and should not be assumed.

Magnetic Holding and Positioning

This rectangular pot magnet can be incorporated into appropriately designed systems where a removable magnetic connection to ferromagnetic steel is required.

Potential applications include:

• Removable signs
• Display components
• Access panels
• Furniture components
• Product enclosures
• Fixtures
• Jigs
• Equipment attachments
• Positioning systems

Its mechanical mounting features allow the pot magnet itself to be fixed to one component while the magnetic working face attracts a compatible steel target.

Magnetic Holding Performance

Actual magnetic holding performance depends on factors including:

• NdFeB magnetic grade
• Pot construction
• Target steel thickness
• Target steel composition
• Available contact area
• Surface flatness
• Air gaps
• Paint and coatings
• Magnet orientation
• Load direction
• Mechanical leverage

No specific pull force or Gauss rating has been supplied for this product and these values should not be inferred solely from its dimensions.

Direct Pull vs Shear Force

Magnetic holding performance changes according to the direction in which a load is applied.

Direct pull occurs when force attempts to separate the magnet perpendicular to the target steel surface.

Shear force occurs when the load acts parallel to the target and encourages the magnet to slide.

A magnet mounted against a vertical steel surface may therefore support substantially less practical load than the same magnet under ideal direct-pull test conditions.

Magnetic Attraction and Air Gaps

Pot magnets generally provide their strongest practical attraction when the working face is positioned directly against clean, flat and sufficiently thick ferromagnetic steel.

Magnetic performance can be reduced by gaps created by:

• Paint
• Protective coatings
• Plastic
• Adhesive
• Dirt
• Rust
• Surface irregularities
• Non-magnetic spacers

Magnetic attraction decreases rapidly as the distance between the magnetic working face and target increases.

Compatible Target Materials

This neodymium pot magnet is designed to attract ferromagnetic iron and compatible steels.

Suitable targets may include:

• Mild steel
• Iron
• Magnetic steel
• Ferromagnetic steel plates
• Compatible machinery components
• Steel structures

It will not effectively attract:

• Aluminium
• Copper
• Brass
• Plastic
• Timber
• Glass

Many stainless steel grades may also provide weak or negligible magnetic attraction and should be tested before use.

Rectangular Pot Magnet vs Standard Block Magnet

A standard neodymium block magnet consists primarily of the magnetic element itself, while a rectangular pot magnet incorporates the magnetic material into a housing designed as part of the magnetic circuit.

A pot-style design can provide several benefits for mounting applications:

• Concentrates magnetic flux towards a working face
• Provides practical mechanical mounting features
• Offers some protection to the magnetic element
• Simplifies integration into fixtures and products
• Provides countersunk fixing points

A standard block magnet may be preferable where magnetic interaction is required from multiple faces or where the magnet will be incorporated into a separately designed magnetic circuit.

Permanent Magnetic Operation

This rectangular pot magnet uses a permanent neodymium magnetic system and requires no external electrical supply.

It requires:

• No electricity
• No batteries
• No charging
• No electrical wiring

The magnetic working face remains continuously active during normal use.

Technical Specifications

• Product Type: Neodymium Rectangular Pot Magnet with Countersunk Holes
• Alternative Names: Rectangular Neodymium Mounting Magnet, Countersunk Rectangular Pot Magnet, Rare Earth Channel Magnet, Screw-Fix Magnetic Holder
• Length: 20mm
• Width: 13.5mm
• Shape: Rectangular
• Magnetic Material: Neodymium Iron Boron (NdFeB)
• Construction: Pot-Style Magnetic Assembly
• Mounting Features: Countersunk Holes
• Magnet Type: Rare Earth Permanent Magnet
• Magnetic Operation: Permanent
• Power Required: None
• Target Materials: Compatible ferromagnetic iron and steel
• Primary Functions: Magnetic mounting, holding, positioning and removable attachment
• Typical Applications: Fixtures, displays, signage, furniture, manufacturing, product assemblies and OEM systems

Industrial, Display and OEM Applications

The compact 20mm x 13.5mm rectangular footprint makes this pot magnet suitable for integration into manufactured products and custom magnetic mounting systems.

Potential users include:

• Engineers
• Product designers
• Display manufacturers
• Sign manufacturers
• Furniture and cabinetry manufacturers
• Fixture and jig designers
• Equipment manufacturers
• Retail fit-out businesses
• Prototype developers
• OEM manufacturers

For technical applications, both the magnetic and mechanical performance should be evaluated as part of the complete installation.

Handling Neodymium Pot Magnets

Neodymium magnets can generate strong attraction relative to their size and should be handled carefully.

Avoid:

• Allowing the magnet to snap onto steel uncontrollably
• Forceful collisions with other magnets
• Placing fingers between the magnet and steel
• Excessive mechanical pressure
• Overtightening mounting screws
• Drilling, cutting or modifying the magnetic assembly

Use controlled movements when bringing the magnetic working face close to ferromagnetic material.

Please Note

This product is a Neodymium Rectangular Pot Magnet with Countersunk Holes measuring 20mm long x 13.5mm wide.

Only the length and width have been supplied. No specific overall thickness or height, NdFeB magnetic grade, pull force, Gauss rating, number of countersunk holes, hole dimensions, compatible screw size, housing material, coating or finish, dimensional tolerance or maximum operating temperature has been provided and these specifications should not be assumed.

The pot-style construction helps direct and concentrate magnetic flux towards the primary working face. Actual holding performance depends on the magnetic grade, pot design, target steel thickness and composition, available contact area, air gaps, surface condition, orientation and load direction.

Use appropriately sized countersunk fasteners and avoid overtightening, as excessive mechanical pressure may damage the magnetic assembly.

This magnet should not be treated as certified lifting equipment or used as the sole means of supporting a hazardous load without an appropriately engineered and rated system.

Keep neodymium magnets away from children, pacemakers and other medical implants, magnetic storage media and sensitive electronic equipment.