Neodymium Rectangular Pot Magnet with Countersunk Holes – 40mm x 13.5mm x 5mm

The Neodymium Rectangular Pot Magnet with Countersunk Holes – 40mm x 13.5mm x 5mm is a compact, low-profile rare earth mounting magnet measuring 40mm long x 13.5mm wide x 5mm thick. Featuring a Neodymium Iron Boron (NdFeB) magnetic element within a rectangular pot-style housing, this magnetic assembly incorporates countersunk mounting holes for secure mechanical fixing with compatible countersunk fasteners.

Also known as a rectangular neodymium pot magnet, countersunk mounting magnet, rare earth channel magnet, rectangular magnetic holder or screw-fix neodymium magnet, its slim 5mm profile makes it particularly useful for fixtures, displays, signage, furniture, cabinetry, removable panels, machinery, product assemblies and custom OEM applications where installation depth is limited.

The pot-style construction forms part of the magnetic circuit, helping to direct and concentrate magnetic flux towards the primary working face, while the countersunk mounting design allows the magnet to be mechanically integrated into a product, fixture or structure.

Key Features

• 40mm length x 13.5mm width x 5mm thickness
• Slim, low-profile rectangular design
• Neodymium Iron Boron (NdFeB) rare earth magnetic material
• Pot-style magnetic construction
• Countersunk mounting holes
• Designed for mechanical fixing with compatible countersunk fasteners
• Pot 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, displays and signage
• Useful for furniture and cabinetry
• Permanent magnetic operation
• No electricity or batteries required
• Suitable for custom and OEM magnetic assemblies

Common Applications

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

40mm x 13.5mm x 5mm Rectangular Pot Magnet

This rectangular neodymium pot magnet measures:

• Length: 40mm
• Width: 13.5mm
• Thickness: 5mm

The elongated 40mm x 13.5mm footprint provides a practical rectangular mounting format, while the 5mm thickness creates a slim, low-profile magnetic assembly.

This geometry can be useful where a conventional round pot magnet does not suit the available installation space or where a narrow rectangular mounting component is preferred.

Potential installations include:

• Shallow recesses
• Narrow fixtures
• Display systems
• Furniture components
• Signage
• Equipment housings
• Removable panels
• Custom manufactured products

What Is a Rectangular Neodymium Pot Magnet?

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

The pot-style construction helps direct and concentrate magnetic flux towards the primary working face, making the assembly particularly useful for attachment to compatible ferromagnetic steel.

This differs from a standard exposed neodymium block magnet, where the magnetic field is not concentrated through a pot-style magnetic circuit in the same way.

Rectangular pot magnets are commonly used for:

• Holding
• Mounting
• Positioning
• Locating
• Removable attachment
• Product integration

The surrounding structure can also provide 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 provide mechanical mounting points for compatible countersunk fasteners.

This installation method can be useful for:

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

Countersunk fasteners are designed to sit within the recessed mounting features, helping create a neat and compact installation.

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

Slim 5mm Profile

At only 5mm thick, this rectangular pot magnet provides a low-profile mounting solution for applications where available installation depth is restricted.

Potential applications include:

• Thin fixtures
• Shallow recesses
• Display panels
• Signage systems
• Cabinetry
• Furniture
• Equipment panels
• Compact product assemblies

The 5mm thickness refers to the supplied physical dimension of the magnetic assembly and should not be interpreted as an indication of pull force or holding capacity.

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 magnetic mounting assemblies.

NdFeB pot magnets are commonly incorporated into:

• Engineering equipment
• Manufacturing systems
• Fixtures and jigs
• Displays
• Furniture
• Machinery
• Product assemblies
• 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 magnetic holding and positioning systems.

Potential uses include:

• Holding components against steel
• Positioning removable parts
• Locating components
• Mounting signs
• Securing display components
• Retaining removable panels
• Creating magnetic fixtures
• Integrating magnetic attachment into manufactured products

The countersunk holes allow the pot magnet itself to be mechanically secured while its working face provides magnetic attachment to compatible ferromagnetic steel.

Magnetic Closures and Removable Panels

The low-profile rectangular design can also be useful in magnetic closure and panel-retention applications.

Potential uses include:

• Access panels
• Cabinet components
• Display panels
• Furniture
• Equipment covers
• Removable enclosures
• Product housings

For applications where a panel could fall or create a hazard if magnetic attachment fails, an appropriate secondary mechanical restraint should be incorporated.

Magnetic Holding Performance

Actual magnetic 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 40mm x 13.5mm x 5mm dimensions.

Direct Pull vs Shear Force

Magnetic holding performance varies according to the direction in which the load acts.

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

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

Practical vertical or sideways holding performance can therefore be significantly lower than ideal direct-pull performance.

Vibration, shock and mechanical leverage can further reduce practical holding reliability.

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
• Powder coating
• Protective coatings
• Plastic
• Adhesive
• Dirt
• Rust
• Surface irregularities

Magnetic attraction decreases rapidly as the distance between the magnet 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.

Avoid Overtightening Countersunk Fasteners

Care should be taken when mechanically installing countersunk neodymium pot magnets.

Neodymium Iron Boron is a hard and brittle magnetic material, and excessive mechanical pressure can damage the magnetic element.

During installation:

• Select appropriately sized countersunk fasteners
• Ensure the mounting surface is flat
• Align the fasteners correctly
• Tighten gradually and evenly
• Do not overtighten
• Avoid forcing the assembly against an uneven surface
• Avoid impact during installation

The fasteners should secure the magnetic assembly without introducing unnecessary mechanical stress.

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 NdFeB material into a housing designed as part of the magnetic circuit.

A pot-style design can provide advantages for mounting applications by:

• Directing magnetic flux towards a primary working face
• Providing mechanical mounting points
• Offering some protection to the magnetic element
• Simplifying installation into fixtures and products
• Allowing countersunk screw fixing

A standard block magnet may be more suitable where magnetic interaction is required from multiple faces or where a separate magnetic circuit is being designed.

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

Its magnetic working face remains continuously active during normal use.

Technical Specifications

• Product Type: Neodymium Rectangular Pot Magnet with Countersunk Holes
• Alternative Names: Rectangular Neodymium Pot Magnet, Countersunk Mounting Magnet, Rare Earth Channel Magnet, Rectangular Magnetic Holder, Screw-Fix Neodymium Magnet
• Length: 40mm
• Width: 13.5mm
• Thickness: 5mm
• Shape: Rectangular
• Profile: Slim / Low Profile
• 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, cabinetry, manufacturing, product assemblies and OEM systems

Industrial, Display and OEM Applications

The combination of an elongated 40mm x 13.5mm footprint and slim 5mm profile makes this neodymium rectangular pot magnet suitable for a range of commercial and engineered 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 40mm long x 13.5mm wide x 5mm thick.

No specific 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 supplied 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.