Samarium Cobalt Countersunk Pot Magnet D19mm x 8mm M4 C/S

Samarium Cobalt Countersunk Pot Magnet – Ø19mm x 8mm | M4 Countersunk

The Samarium Cobalt Countersunk Pot Magnet – Ø19mm x 8mm | M4 Countersunk is a high-performance magnetic mounting solution engineered for applications where exceptional temperature resistance, corrosion resistance, and reliable holding power are essential. Combining a premium Samarium Cobalt (SmCo) rare earth magnet with a durable steel pot housing, this magnetic assembly delivers concentrated magnetic force while providing a convenient flush-mount fixing point.

Measuring 19mm in diameter and 8mm high, this pot magnet features an M4 countersunk mounting hole, allowing it to be securely fixed using a countersunk screw for a clean, flush installation. The steel cup focuses the magnetic field onto the exposed magnetic face, significantly increasing the holding force compared to an equivalent standalone magnet while also helping protect the magnet from mechanical damage.

Unlike standard neodymium magnets, Samarium Cobalt magnets are specifically designed for demanding environments involving high operating temperatures, corrosive conditions, and long-term magnetic stability. This makes them an excellent choice for aerospace, defence, industrial manufacturing, automotive, laboratory equipment, marine applications, and specialist engineering projects.

Whether used as a magnetic mounting point, removable fixture, holding device, or positioning system, this 19mm SmCo Countersunk Pot Magnet offers dependable performance where conventional magnets may not be suitable.

Key Features

• Premium Samarium Cobalt (SmCo) rare earth magnet
• Steel pot construction concentrates magnetic holding force
• 19mm diameter x 8mm height
• M4 countersunk mounting hole
• Flush screw mounting for a neat installation
• Excellent resistance to corrosion and oxidation
• Outstanding performance at elevated temperatures
• High resistance to demagnetisation
• Long service life in demanding environments
• Suitable for industrial, commercial, and specialist engineering applications

Common Applications

• Industrial fixtures
• Machine guarding
• Magnetic mounting systems
• High-temperature manufacturing equipment
• Aerospace assemblies
• Automotive engineering
• Laboratory equipment
• Marine hardware
• Inspection fixtures
• Removable access panels

Ideal For

• Engineers
• OEM manufacturers
• Machine builders
• Automation specialists
• Aerospace engineers
• Defence contractors
• Marine equipment manufacturers
• Research laboratories
• Industrial maintenance teams
• Product designers

Why Choose a Samarium Cobalt Countersunk Pot Magnet?

Samarium Cobalt (SmCo) is one of the most advanced permanent magnetic materials available, offering outstanding magnetic performance while maintaining stability under conditions that would significantly reduce the effectiveness of many other magnet types.

Unlike standard neodymium magnets, SmCo magnets provide excellent resistance to corrosion and generally do not require protective plating to prevent oxidation. They also maintain strong magnetic performance at much higher operating temperatures, making them an excellent choice for applications involving heat, thermal cycling, vacuum environments, or chemically aggressive conditions.

The steel pot design further enhances performance by concentrating the magnetic field onto the working face while shielding the opposite side. This not only increases holding force but also protects the magnet from impact during everyday use.

The integrated M4 countersunk hole allows the magnet to be permanently secured using a countersunk screw, creating a strong magnetic fixing point that sits flush against the mounting surface for a clean, professional installation.

Technical Specifications

• Product Type: Countersunk Pot Magnet
• Magnet Material: Samarium Cobalt (SmCo)
• Housing Material: Steel
• Shape: Round Pot Magnet
• Diameter: 19mm
• Height: 8mm
• Mounting Hole: M4 Countersunk
• Mounting Method: Countersunk screw fixing
• Magnetic Circuit: Steel cup concentrates magnetic field
• Magnet Type: Permanent Rare Earth Magnet
• Applications: Mounting, holding, positioning, automation, industrial machinery, and high-temperature environments

Benefits of Samarium Cobalt Pot Magnets

• Exceptional magnetic stability
• Excellent high-temperature performance
• Superior corrosion resistance
• Increased holding force through steel pot construction
• Flush and secure screw mounting
• Reliable long-term performance
• Resistant to oxidation and demagnetisation
• Suitable for harsh industrial environments
• Ideal for precision engineering applications
• Low-maintenance permanent magnetic solution

Please Note

Samarium Cobalt magnets are significantly more brittle than steel and should be handled carefully. Avoid impact, dropping, or overtightening the mounting screw, as excessive mechanical stress may damage the magnet.

The quoted holding force can vary depending on the thickness, grade, and surface condition of the mating steel. Air gaps, paint, coatings, rust, uneven contact, and sideways or peeling forces will reduce magnetic performance.

Although Samarium Cobalt magnets offer excellent corrosion resistance and high-temperature capability, the overall operating limits of the assembly may also depend on the steel housing, mounting hardware, and surrounding application.

Keep magnets away from children, pacemakers, medical implants, magnetic storage media, and sensitive electronic equipment that may be affected by strong magnetic fields.