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MP 12x8/4x3 / N38 - ring magnet

ring magnet

Catalog no 030395

GTIN/EAN: 5906301812326

5.00
Load capacity 2.21 kg / 21.72 N Magnetic Induction 277.09 mT / 2771 Gs
Diameter
12 mm [±0,1 mm]
internal diameter Ø
8/4 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
2.26 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product details »

1.160 zł net / pcs

1.427 zł with VAT (23% VAT) / pcs

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price from 1 pcs
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price from 550 pcs
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price from 2200 pcs
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Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

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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Product card - MP 12x8/4x3 / N38 - ring magnet

Specification / characteristics - MP 12x8/4x3 / N38 - ring magnet

properties
properties values
Cat. no. 030395
GTIN/EAN 5906301812326
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter 12 mm [±0,1 mm]
internal diameter Ø 8/4 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 2.26 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.21 kg / 21.72 N
Magnetic Induction ~ ? 277.09 mT / 2771 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 12x8/4x3 / 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

Technical analysis of the assembly - report

These data are the outcome of a physical analysis. Results are based on models for the class Nd2Fe14B. Real-world performance might slightly differ. Treat these data as a reference point for designers.

Table 1: Static pull force (force vs gap) - power drop
MP 12x8/4x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2423 Gs
242.3 mT
 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
 warning
1 mm 2138 Gs
213.8 mT
 1.72 kg / 3.79 LBS
1720.7 g / 16.9 N
 safe
2 mm 1786 Gs
178.6 mT
 1.20 kg / 2.65 LBS
1200.5 g / 11.8 N
 safe
3 mm 1437 Gs
143.7 mT
 0.78 kg / 1.71 LBS
777.8 g / 7.6 N
 safe
5 mm 885 Gs
88.5 mT
 0.29 kg / 0.65 LBS
294.7 g / 2.9 N
 safe
10 mm 277 Gs
27.7 mT
 0.03 kg / 0.06 LBS
28.9 g / 0.3 N
 safe
15 mm 110 Gs
11.0 mT
 0.00 kg / 0.01 LBS
4.6 g / 0.0 N
 safe
20 mm 53 Gs
5.3 mT
 0.00 kg / 0.00 LBS
1.1 g / 0.0 N
 safe
30 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
50 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Magnetic force decreases sharply per each millimeter of spacing. Note that even the smallest gap (e.g., contamination, paint, rust) noticeably reduces the pull force. Neodymiums hold most effectively in perfect adhesion; air break nullifies the force. Notice how flashily the parameters plummet, when the product does not adhere tightly to the steel surface. When designing the mounting, avoid redundant distances.

Table 2: Slippage capacity (vertical surface)
MP 12x8/4x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.44 kg / 0.97 LBS
442.0 g / 4.3 N
1 mm Stal (~0.2) 0.34 kg / 0.76 LBS
344.0 g / 3.4 N
2 mm Stal (~0.2) 0.24 kg / 0.53 LBS
240.0 g / 2.4 N
3 mm Stal (~0.2) 0.16 kg / 0.34 LBS
156.0 g / 1.5 N
5 mm Stal (~0.2) 0.06 kg / 0.13 LBS
58.0 g / 0.6 N
10 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
This section indicates the approximate shear load required to start the downward movement of the magnet vertically along a vertical steel plate (assuming typical friction). This value depends on the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 12x8/4x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.66 kg / 1.46 LBS
663.0 g / 6.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.44 kg / 0.97 LBS
442.0 g / 4.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.22 kg / 0.49 LBS
221.0 g / 2.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.11 kg / 2.44 LBS
1105.0 g / 10.8 N
When placing a holder on a vertical surface (e.g., a car body), it will only hold just approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that holders move down easier than they pop off the substrate. Want to create a vertical fastening? Note that the shear force is much weaker than the maximum static pull force. On a slippery surface, the magnet will slip down under a much lighter weight. Application of an anti-slip coating can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 12x8/4x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.22 kg / 0.49 LBS
221.0 g / 2.2 N
1 mm
25%
 0.55 kg / 1.22 LBS
552.5 g / 5.4 N
2 mm
50%
 1.11 kg / 2.44 LBS
1105.0 g / 10.8 N
3 mm
75%
 1.66 kg / 3.65 LBS
1657.5 g / 16.3 N
5 mm
100%
 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
10 mm
100%
 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
11 mm
100%
 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
12 mm
100%
 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
A too thin steel is unable to focus the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you need a suitably thick element of metal. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the holder works worse. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal resistance (stability) - power drop
MP 12x8/4x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.21 kg / 4.87 LBS
2210.0 g / 21.7 N
 OK
40 °C -2.2% 2.16 kg / 4.77 LBS
2161.4 g / 21.2 N
 OK
60 °C -4.4% 2.11 kg / 4.66 LBS
2112.8 g / 20.7 N
80 °C -6.6% 2.06 kg / 4.55 LBS
2064.1 g / 20.2 N
100 °C -28.8% 1.57 kg / 3.47 LBS
1573.5 g / 15.4 N
Classic neodymiums irreversibly lose parameters above the temperature limit. Avoid high temperatures – heat can irreversibly demagnetize this product. With increasing heat, the magnet's power momentarily decreases. Refrain from using this product close to heaters higher than its working range. Exceeding the critical threshold will lead to destruction of magnetism.
*Technical advisory: Thermal stability is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. Red status in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MP 12x8/4x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.09 kg / 6.82 LBS
4 010 Gs
0.46 kg / 1.02 LBS
464 g / 4.6 N
 N/A
1 mm 2.77 kg / 6.12 LBS
4 589 Gs
0.42 kg / 0.92 LBS
416 g / 4.1 N
 2.50 kg / 5.50 LBS
~0 Gs
2 mm 2.41 kg / 5.31 LBS
4 276 Gs
0.36 kg / 0.80 LBS
361 g / 3.5 N
 2.17 kg / 4.78 LBS
~0 Gs
3 mm 2.03 kg / 4.48 LBS
3 930 Gs
0.31 kg / 0.67 LBS
305 g / 3.0 N
 1.83 kg / 4.04 LBS
~0 Gs
5 mm 1.36 kg / 3.00 LBS
3 216 Gs
0.20 kg / 0.45 LBS
204 g / 2.0 N
 1.23 kg / 2.70 LBS
~0 Gs
10 mm 0.41 kg / 0.91 LBS
1 770 Gs
0.06 kg / 0.14 LBS
62 g / 0.6 N
 0.37 kg / 0.82 LBS
~0 Gs
20 mm 0.04 kg / 0.09 LBS
554 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
 0.04 kg / 0.08 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
58 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
35 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
23 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
16 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
11 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
8 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. Such a system of magnet-to-magnet generates a stronger field and a wider radius of action. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is a bit weaker than the attraction, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Important: Estimates refer to sliding force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MP 12x8/4x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a large risk to electronic devices as well as medical implants. These magnets generate a field that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MP 12x8/4x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.91 km/h
(7.20 m/s)
 0.06 J
30 mm 26.09 km/h
(7.25 m/s)
 0.06 J
50 mm 26.09 km/h
(7.25 m/s)
 0.06 J
100 mm 26.09 km/h
(7.25 m/s)
 0.06 J
Neodymium magnets are prone to chipping – a collision with steel causes immediate chipping. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can destroy the magnet or painful pinches to fingers. Be sure to control the product during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Coating parameters (durability)
MP 12x8/4x3 / 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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MP 12x8/4x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 466 Mx 24.7 µWb
Pc Coefficient 0.32 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data in coil applications and motors. The Pc coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 12x8/4x3 / N38

Environment Effective steel pull Effect
Air (land) 2.21 kg Standard
Water (riverbed) 2.53 kg
(+0.32 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

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

2. Plate thickness effect

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

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.32

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

Material specification

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%

Environmental data

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: 030395-2026
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The ring magnet with a hole MP 12x8/4x3 / N38 is created for permanent mounting, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. It is also often used in advertising for fixing signs and in workshops for organizing tools.
This is a crucial issue when working with model MP 12x8/4x3 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.
Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. 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 inside building 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. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (12 mm), so it doesn't protrude beyond the outline.
This model is characterized by dimensions Ø12x3 mm and a weight of 2.26 g. The pulling force of this model is an impressive 2.21 kg, which translates to 21.72 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 8/4 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros and cons of neodymium magnets.

Benefits

Apart from their strong holding force, neodymium magnets have these key benefits:
  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (according to analyses),
  • They are resistant to demagnetization induced by external field influence,
  • Thanks to the reflective finish, the coating of nickel, gold, or silver gives an professional appearance,
  • Magnets are distinguished by exceptionally strong magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to modularity in shaping and the capacity to modify to client solutions,
  • Significant place in innovative solutions – they are utilized in data components, motor assemblies, precision medical tools, as well as modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Characteristics of disadvantages of neodymium magnets and ways of using them
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Possible danger resulting from small fragments of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices can complicate diagnosis medical after entering the body.
  • Due to complex production process, their price is relatively high,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what it depends on?

The specified lifting capacity concerns the maximum value, measured under optimal environment, namely:
  • using a base made of high-permeability steel, functioning as a magnetic yoke
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by even structure
  • without any insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Key elements affecting lifting force

Holding efficiency is influenced by working environment parameters, mainly (from priority):
  • Clearance – existence of any layer (paint, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
  • Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
  • Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal weaken the grip.
  • Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Precautions when working with neodymium magnets
Serious injuries

Big blocks can crush fingers instantly. Under no circumstances place your hand between two attracting surfaces.

GPS Danger

Be aware: neodymium magnets produce a field that interferes with precision electronics. Keep a separation from your phone, device, and GPS.

Magnets are brittle

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Protect data

Very strong magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Danger to pacemakers

For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Fire risk

Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Conscious usage

Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Heat sensitivity

Avoid heat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, cease working with magnets and use protective gear.

Choking Hazard

Absolutely store magnets out of reach of children. Ingestion danger is high, and the consequences of magnets connecting inside the body are life-threatening.

Important! More info about hazards in the article: Magnet Safety Guide.