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MP 16x7.5/3.5x3 / N38 - ring magnet

ring magnet

Catalog no 030567

Magnetic Induction 0.00 mT / 0 Gs
Diameter
16 mm [±0,1 mm]
internal diameter Ø
7.5/3.5 mm [±0,1 mm]
Height
3 mm [±0,1 mm]

How we measure these parameters — certificates and measurements

see technical data »

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Frequently asked questions

Where can I compare prices of ring magnets for mounting in Poland?
The DHIT price list and individual product cards show the available ring magnets and their current prices. Compare the outside diameter, hole diameter, height, grade and quantity before ordering.
Are ring magnets resistant to damage?
NdFeB is brittle and may crack on impact or when magnets collide. A coating or suitable housing can provide additional protection, but a screw must not place excessive stress on the magnet. Check the mounting instructions for the selected model.
Which ring magnet is suitable for an outdoor structure?
Check the coating, protection against moisture and the temperature reached at the actual installation site. An unprotected magnet should not be assumed suitable for continuous water exposure. Compare the conditions with the selected product card.
Where can I check the available sizes of neodymium ring magnets?
The category and price list show the dimensions of available models. Each product card gives the outside diameter, inside diameter and height. If a suitable size is missing, ask about a custom version.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical data of the product - MP 16x7.5/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 16x7.5/3.5x3 / N38 - ring magnet

properties
properties values
Cat. no. 030567
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter 16 mm [±0,1 mm]
internal diameter Ø 7.5/3.5 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Magnetic Induction ~ ? 0.00 mT / 0 Gs
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 16x7.5/3.5x3 / N38 - ring magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Physical modeling of the product - technical parameters

Presented data represent the direct effect of a engineering calculation. Values are based on models for the class Nd2Fe14B. Real-world parameters might slightly differ. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - power drop
MP 16x7.5/3.5x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1882 Gs
188.2 mT
 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
 low risk
1 mm 1746 Gs
174.6 mT
 1.08 kg / 2.39 pounds
1084.0 g / 10.6 N
 low risk
2 mm 1561 Gs
156.1 mT
 0.87 kg / 1.91 pounds
867.2 g / 8.5 N
 low risk
3 mm 1357 Gs
135.7 mT
 0.66 kg / 1.44 pounds
655.1 g / 6.4 N
 low risk
5 mm 969 Gs
96.9 mT
 0.33 kg / 0.74 pounds
334.3 g / 3.3 N
 low risk
10 mm 387 Gs
38.7 mT
 0.05 kg / 0.12 pounds
53.2 g / 0.5 N
 low risk
15 mm 171 Gs
17.1 mT
 0.01 kg / 0.02 pounds
10.4 g / 0.1 N
 low risk
20 mm 87 Gs
8.7 mT
 0.00 kg / 0.01 pounds
2.7 g / 0.0 N
 low risk
30 mm 30 Gs
3.0 mT
 0.00 kg / 0.00 pounds
0.3 g / 0.0 N
 low risk
50 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
Magnetic force decreases drastically with every subsequent millimeter of distance. Remember that every additional insulation layer (e.g., dirt, varnish, dust) strongly weakens the grip. Magnets hold most effectively at the point of direct contact; gap nullifies the force. Observe how rapidly the parameters plummet, when the magnet does not adhere tightly to the steel surface. When designing the assembly, avoid additional spacers.

Table 2: Vertical force (wall)
MP 16x7.5/3.5x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.25 kg / 0.56 pounds
252.0 g / 2.5 N
1 mm Raw steel (µ ≈ 0.2) 0.22 kg / 0.48 pounds
216.0 g / 2.1 N
2 mm Raw steel (µ ≈ 0.2) 0.17 kg / 0.38 pounds
174.0 g / 1.7 N
3 mm Raw steel (µ ≈ 0.2) 0.13 kg / 0.29 pounds
132.0 g / 1.3 N
5 mm Raw steel (µ ≈ 0.2) 0.07 kg / 0.15 pounds
66.0 g / 0.6 N
10 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below calculates the theoretical force required to initiate the downward movement of the magnet vertically along a upright steel wall (assuming standard friction). This value is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 16x7.5/3.5x3 / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.38 kg / 0.83 pounds
377.9 g / 3.7 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.25 kg / 0.56 pounds
251.9 g / 2.5 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.13 kg / 0.28 pounds
126.0 g / 1.2 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.63 kg / 1.39 pounds
629.8 g / 6.2 N
When hanging a magnet on a upright wall (e.g., a car body), it you can count on only approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient mean that magnets move down easier than they pop off the substrate. Planning a wall mount? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a much lighter load. Application of an anti-slip layer can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 16x7.5/3.5x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.13 kg / 0.28 pounds
126.0 g / 1.2 N
1 mm
25%
 0.31 kg / 0.69 pounds
314.9 g / 3.1 N
2 mm
50%
 0.63 kg / 1.39 pounds
629.8 g / 6.2 N
3 mm
75%
 0.94 kg / 2.08 pounds
944.7 g / 9.3 N
5 mm
100%
 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
10 mm
100%
 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
11 mm
100%
 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
12 mm
100%
 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
A thin sheet is unable to focus the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a too thin substrate, the field will pass right through and the attraction force will be weaker. To squeeze the maximum of this magnet's power, you require a sufficiently solid backing of steel. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the magnet works worse. We advise picking the steel cross-section from these parameters.

Table 5: Working in heat (material behavior) - resistance threshold
MP 16x7.5/3.5x3 / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.26 kg / 2.78 pounds
1259.6 g / 12.4 N
 Estimate
40 °C -4.4% 1.20 kg / 2.66 pounds
1204.8 g / 11.8 N
 Estimate
60 °C -8.6% 1.15 kg / 2.54 pounds
1151.2 g / 11.3 N
 Estimate
80 °C -12.8% 1.10 kg / 2.42 pounds
1098.9 g / 10.8 N
 Material limit
100 °C — — Out of range — no model
The table estimates the reversible force change relative to 20°C, assuming a Br coefficient of -0.11%/°C and force proportional to Br². This is a simplified model with unchanged contact and geometry, not a measurement. Above the material limit, neither force nor irreversible magnetization loss is predicted.
The temperature limit comes from this product’s material data. Permissible conditions also depend on geometry and the magnetic circuit. Without B-H curves for the specific grade and temperature, Pc alone does not determine irreversible demagnetization. Values within the material range do not guarantee the allowable temperature of the complete assembly.

Table 6: Two magnets (attraction) - field range
MP 16x7.5/3.5x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.55 kg / 7.83 pounds
3 330 Gs
0.53 kg / 1.17 pounds
533 g / 5.2 N
 N/A
1 mm 3.33 kg / 7.34 pounds
3 644 Gs
0.50 kg / 1.10 pounds
500 g / 4.9 N
 3.00 kg / 6.61 pounds
~0 Gs
2 mm 3.06 kg / 6.74 pounds
3 492 Gs
0.46 kg / 1.01 pounds
459 g / 4.5 N
 2.75 kg / 6.07 pounds
~0 Gs
3 mm 2.76 kg / 6.08 pounds
3 316 Gs
0.41 kg / 0.91 pounds
414 g / 4.1 N
 2.48 kg / 5.47 pounds
~0 Gs
5 mm 2.14 kg / 4.72 pounds
2 920 Gs
0.32 kg / 0.71 pounds
321 g / 3.1 N
 1.93 kg / 4.24 pounds
~0 Gs
10 mm 0.94 kg / 2.08 pounds
1 939 Gs
0.14 kg / 0.31 pounds
141 g / 1.4 N
 0.85 kg / 1.87 pounds
~0 Gs
20 mm 0.15 kg / 0.33 pounds
773 Gs
0.02 kg / 0.05 pounds
23 g / 0.2 N
 0.14 kg / 0.30 pounds
~0 Gs
50 mm 0.00 kg / 0.01 pounds
98 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
60 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
40 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
27 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
20 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
14 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets attract each other from a significantly greater distance than a magnet and sheet combination. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Planning to create a solid fastener? Use a pair of magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the pinch force is massive. The levitation is slightly lower than the attraction, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Important: Estimates demonstrate sliding force of two same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Axial field levels — not safety zones
MP 16x7.5/3.5x3 / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 6.0 cm
< 10 Gs < 1.0 mT 4.5 cm
< 20 Gs < 2.0 mT 3.5 cm
< 40 Gs < 4.0 mT 3.0 cm
< 50 Gs < 5.0 mT 2.5 cm
< 400 Gs < 40.0 mT 1.0 cm
< 600 Gs < 60.0 mT 1.0 cm
Reference field levels for a model of one magnet, on its axis in air, with a 5 mm distance step. These are not device immunity limits or safe distances for implants. Do not use this table to assess the safety of a pacemaker, defibrillator or other implant; follow the device manufacturer’s and your clinician’s guidance. Steel and other magnets change the field distribution.

Table 8: Impact energy (cracking risk) - warning
MP 16x7.5/3.5x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 17.95 km/h
(4.99 m/s)
 0.05 J
30 mm 18.27 km/h
(5.08 m/s)
 0.05 J
50 mm 18.27 km/h
(5.08 m/s)
 0.05 J
100 mm 18.27 km/h
(5.08 m/s)
 0.05 J
Magnetic elements are very brittle – a violent impact against metal risks their cracking. Watch the impact speed – a neodymium left loose becomes dangerous. Kinetic force can destroy the magnet or painful pinches to fingers. Always hold the magnet during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 16x7.5/3.5x3 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MP 16x7.5/3.5x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 780 Mx 37.8 µWb
Pc Coefficient 0.24 Low (Flat)
Total magnetic flux passing through the pole surface. Key data for generator designers as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MP 16x7.5/3.5x3 / N38

Environment Effective steel pull Effect
Air (land) 1.26 kg Standard
Water (riverbed) 1.44 kg
(+0.18 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains only ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Power loss vs temp

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.24

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Elemental analysis

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Ecology and recycling (GPSR)

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 030567-2026
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The ring magnet with a hole MP 16x7.5/3.5x3 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.
This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.
These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.
The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.
This model is characterized by dimensions Ø16x3 mm and a weight of 0 g. The key parameter here is the lifting capacity amounting to approximately 0.00 kg (force ~0.00 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7.5/3.5 mm.
The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros and cons of Nd2Fe14B magnets.

Advantages

Besides their exceptional field intensity, neodymium magnets offer the following advantages:
  • They have constant strength, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
  • Neodymium magnets are exceptionally resistant to demagnetization caused by magnetic disturbances,
  • A magnet with a shiny nickel surface is more attractive,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of detailed creating and adjusting to precise requirements,
  • Significant place in modern technologies – they serve a role in mass storage devices, electromotive mechanisms, diagnostic systems, as well as modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Drawbacks and weaknesses of neodymium magnets: tips and applications.
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using a housing - magnetic mount.
  • Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to be problematic in diagnostics medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

Magnet power is the result of a measurement for optimal configuration, including:
  • with the application of a yoke made of special test steel, ensuring maximum field concentration
  • with a thickness of at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • during pulling in a direction vertical to the plane
  • at temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

In real-world applications, the actual lifting capacity results from many variables, ranked from the most important:
  • Gap (between the magnet and the plate), because even a very small distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Direction of force – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate reduces the holding force.

H&S for magnets
Keep away from electronics

Navigation devices and mobile phones are highly sensitive to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Protective goggles

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Danger to pacemakers

Individuals with a pacemaker should maintain an absolute distance from magnets. The magnetic field can disrupt the functioning of the implant.

Bone fractures

Large magnets can crush fingers instantly. Under no circumstances put your hand between two attracting surfaces.

Keep away from computers

Equipment safety: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Do not give to children

NdFeB magnets are not suitable for play. Accidental ingestion of multiple magnets may result in them connecting inside the digestive tract, which poses a critical condition and requires immediate surgery.

Dust is flammable

Powder produced during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Caution required

Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Allergic reactions

Some people suffer from a sensitization to nickel, which is the common plating for neodymium magnets. Prolonged contact might lead to skin redness. We strongly advise use safety gloves.

Heat sensitivity

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Security! Details about risks in the article: Magnet Safety Guide.