Your Professional Internal Thread Pot Magnets Supplier
Pot Magnets with Internal Thread are compact magnetic assemblies combining a permanent magnet, a ferromagnetic steel pot housing, and a female threaded hole for mechanical installation. The internal thread secures the magnet directly to bolts, studs, rods, fixtures, brackets, and threaded components, while the steel housing concentrates the magnetic flux toward the working surface.
We primarily supply internal thread pot magnets manufactured from NdFeB (Neodymium), Ferrite, Samarium Cobalt (SmCo), and AlNiCo material systems. Our product portfolio spans various metric thread sizes (such as M3, M4, M5, M6, M8, M10), custom pot diameters, specialized high-temperature grades, and protective surface coatings designed for industrial mounting, fixing, positioning, clamping, tooling, automation, and OEM applications.
For applications requiring specific thread sizes, holding force ratings, temperature limits, or installation structures, custom assemblies can be engineered to match mechanical and magnetic specifications.
Key Specifications for Selection
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Specification |
What the Buyer Should Confirm |
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Magnet material |
Neodymium, Ferrite, SmCo, or AlNiCo |
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Magnet grade |
Target magnetic performance and thermal capability |
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Outside diameter (OD) |
Available radial installation space |
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Overall height |
Available axial mounting depth |
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Thread size |
Metric or custom thread standard |
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Thread depth |
Required effective thread engagement length |
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Holding force |
Load capacity under specified contact conditions |
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Working temperature |
Continuous and peak operating temperatures |
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Coating / Plating |
Environmental corrosion protection requirements |
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Steel housing |
Cup dimensions, wall thickness, and structure |
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Contact surface |
Flatness, thickness, and material of the mating steel target |
Why Choose Us as Your Manufacturing Partner
In-House Manufacturing & Assembly Control: We manage the complete production sequence from raw magnetic material processing and steel housing machining to adhesive bonding, magnetic assembly, and magnetization. This ensures structural integrity and consistent magnetic performance across production batches.
Rigorous Magnetic & Mechanical Testing: Every production run undergoes verified pull-force testing on standard mild steel plates, alongside precise thread gauge inspections and dimensional checks to ensure mating compatibility with your equipment.
Material Traceability & Compliance: We source stable, certified magnetic raw materials (NdFeB, Ferrite, SmCo, AlNiCo) with verifiable grade properties, tailored to your required operating temperatures and environmental exposure limits.
Flexible OEM & Custom Engineering: Whether you require custom pot diameters, non-standard metric threads, special thread depths, or specialized anti-corrosion coatings, our engineering team provides direct technical reviews based on your CAD drawings or application constraints.
Reliable Batch Repeatability: For industrial and OEM supply chains, we maintain strict dimensional tolerances and magnetic flux consistency between pilot runs and volume production to eliminate assembly downtime on your lines.
Typical Industrial Applications
Industrial Jigs and Fixtures
Temporary or adjustable positioning of steel components during machining or assembly.
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Automation Equipment
Compact mounting points for proximity sensors, cable guides, mechanical stops, and pneumatic accessories.
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Workholding Systems
Removable magnetic workholding where permanent drilling is restricted.
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Equipment Mounting
Securing inspection covers, access panels, and lightweight structural supports.
04
Commercial Displays
Modular display framing, exhibition signage, and retail fixture mounting.
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The internal thread provides the mechanical interface between the magnetic assembly and equipment. Supported configurations include:
- Metric internal threads (e.g., M3, M4, M5, M6, M8, M10)
- Customized thread sizes and imperial options
- Specific thread depths and engagement limits
- Varying pot diameters and overall assembly heights
- Flat or stepped housing profiles
- Tailored magnetic grades and holding force classes
- Specialized surface finishes and corrosion-resistant coatings
Note: Thread size alone does not determine overall fit; available installation depth and thread engagement must be verified against the mating stud or bolt.
Neodymium Internal Thread Pot Magnets: Neodymium assemblies deliver maximum holding force within compact dimensions. The neodymium magnet is integrated into a protective steel pot that directs the magnetic field to the contact face. Typical configurations include metric internal threads, varied diameters, nickel-plated steel housings, and customized magnetic grades.
Ferrite Internal Thread Pot Magnets: Ferrite pot magnets provide an economical solution for applications where extreme energy density is not required. Ferrite offers strong resistance to demaging and stable performance at elevated temperatures, making it suitable for general industrial and outdoor tasks.
Samarium Cobalt Internal Thread Pot Magnets: SmCo assemblies suit environments where thermal stability and high-temperature resistance take priority over material cost. They operate reliably in high-temperature industrial equipment, sensors, and specialized tooling.
AlNiCo Internal Thread Pot Magnets: AlNiCo pot magnets maintain stable magnetic performance across fluctuating, elevated temperatures, serving specialized industrial setups and precision positioning equipment.
How the Internal Thread Pot Magnet Works
A standard permanent magnet radiates flux from both poles. In a pot magnet, the magnet is embedded in a ferromagnetic steel cup, which serves two primary functions:
Mechanical Protection: Shields the brittle magnetic core from impacts and installation stress.
Magnetic Circuit Optimization: Redirects stray magnetic flux lines toward the open working face, significantly intensifying the holding force on the contact side.
The internal thread on the reverse side isolates the mechanical mounting from the magnetic holding face, allowing secure fastening to equipment without drilling through the target steel structure.
Pull Force Testing & Quality Verification
To ensure batch consistency, our production process implements strict physical testing:
Pull Force Testing
Sample pieces from every production run are tested using specialized digital force gauges on standard mild steel test plates (minimum 10 mm thickness, smooth and unpainted).
Dimensional Inspection
Calipers and thread plug gauges verify outer diameters, total heights, thread pitches, and thread depths.
Coating Thickness Check
Salt spray testing and thickness measurement ensure environmental protection layer integrity.
Installation and Handling Precautions
To prevent structural or magnetic damage during assembly:
Do not exceed the maximum thread depth during installation, as bottoming out a bolt can crack the internal magnet or deform the steel shell.
Avoid applying excessive torque to the mounting bolt. Use thread-locking compound if vibration is present.
Handle neodymium assemblies with care to prevent sudden snapping against steel surfaces, which can cause chipping.
Custom Internal Thread Pot Magnets
Standard catalog parts do not always fit specialized machinery. We support full customization based on drawings, CAD files, or performance requirements:
Custom outer diameters, heights, and thread dimensions (non-metric or special thread pitches)
Tailored magnetic grades for specific high-temperature or high-holding requirements
Alternative housing materials (stainless steel housings for corrosion resistance)
Specialized surface treatments (Epoxy coating, rubber coating to prevent slip and scratching)
FAQ
As one of the most professional pot magnets with internal thread manufacturers and suppliers in China, we're featured by quality products and good service. Please feel free to buy pot magnets with internal thread for sale here from our factory.