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MP 15x7/3.5x3 / N38 - ring magnet

ring magnet

Catalog no 030182

GTIN/EAN: 5906301811992

5.00
Load capacity 2.71 kg / 26.61 N Magnetic Induction 230.16 mT / 2302 Gs
Diameter
15 mm [±0,1 mm]
internal diameter Ø
7/3.5 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
3.76 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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1.420 zł net / pcs

1.747 zł with VAT (23% VAT) / pcs

price for transport

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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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Technical details - MP 15x7/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 15x7/3.5x3 / N38 - ring magnet

properties
properties values
Cat. no. 030182
GTIN/EAN 5906301811992
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 15 mm [±0,1 mm]
internal diameter Ø 7/3.5 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 3.76 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.71 kg / 26.61 N
Magnetic Induction ~ ? 230.16 mT / 2302 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 15x7/3.5x3 / 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

Technical simulation of the product - technical parameters

The following information are the direct effect of a physical simulation. Values were calculated on algorithms for the material Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static force (force vs gap) - power drop
MP 15x7/3.5x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1995 Gs
199.5 mT
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
 medium risk
1 mm 1833 Gs
183.3 mT
 2.29 kg / 5.05 pounds
2289.1 g / 22.5 N
 medium risk
2 mm 1618 Gs
161.8 mT
 1.78 kg / 3.93 pounds
1784.1 g / 17.5 N
 safe
3 mm 1385 Gs
138.5 mT
 1.31 kg / 2.88 pounds
1307.5 g / 12.8 N
 safe
5 mm 959 Gs
95.9 mT
 0.63 kg / 1.38 pounds
627.1 g / 6.2 N
 safe
10 mm 362 Gs
36.2 mT
 0.09 kg / 0.20 pounds
89.3 g / 0.9 N
 safe
15 mm 156 Gs
15.6 mT
 0.02 kg / 0.04 pounds
16.5 g / 0.2 N
 safe
20 mm 78 Gs
7.8 mT
 0.00 kg / 0.01 pounds
4.1 g / 0.0 N
 safe
30 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 pounds
0.5 g / 0.0 N
 safe
50 mm 6 Gs
0.6 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Pulling power decreases significantly with every subsequent millimeter of distance. Keep in mind that even a very thin break (e.g., contamination, paint, dust) noticeably reduces the pull force. Magnets hold optimally at the point of direct contact; gap weakens the force. See how flashily the parameters drop, when the product does not touch directly to the metal substrate. When calculating the assembly, discard unnecessary gaps.

Table 2: Vertical load (vertical surface)
MP 15x7/3.5x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.54 kg / 1.19 pounds
542.0 g / 5.3 N
1 mm Stal (~0.2) 0.46 kg / 1.01 pounds
458.0 g / 4.5 N
2 mm Stal (~0.2) 0.36 kg / 0.78 pounds
356.0 g / 3.5 N
3 mm Stal (~0.2) 0.26 kg / 0.58 pounds
262.0 g / 2.6 N
5 mm Stal (~0.2) 0.13 kg / 0.28 pounds
126.0 g / 1.2 N
10 mm Stal (~0.2) 0.02 kg / 0.04 pounds
18.0 g / 0.2 N
15 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
This section calculates the approximate holding capacity sufficient to cause the slippage of the magnet down against a vertical steel plate (assuming typical friction). The holding force depends on the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 15x7/3.5x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.81 kg / 1.79 pounds
813.0 g / 8.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.54 kg / 1.19 pounds
542.0 g / 5.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.27 kg / 0.60 pounds
271.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.36 kg / 2.99 pounds
1355.0 g / 13.3 N
When placing a magnet on a vertical plane (e.g., a car body), it will only hold just about 20%-30% of its nominal power. Gravitational force as well as a weak degree of grip influence the fact that magnets slide down faster than they pull off. Want to create a hanger? Remember that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the magnet will slip down under a much lighter cargo. Application of an anti-slip coating can significantly improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 15x7/3.5x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.27 kg / 0.60 pounds
271.0 g / 2.7 N
1 mm
25%
 0.68 kg / 1.49 pounds
677.5 g / 6.6 N
2 mm
50%
 1.36 kg / 2.99 pounds
1355.0 g / 13.3 N
3 mm
75%
 2.03 kg / 4.48 pounds
2032.5 g / 19.9 N
5 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
10 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
11 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
12 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
A thin sheet is unable to focus the full magnetic flux, which wastes potential of the holder. If you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you need a suitably thick piece of metal. The saturation phenomenon causes that on thin elements (e.g., car bodies), the holder holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 15x7/3.5x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
 OK
40 °C -2.2% 2.65 kg / 5.84 pounds
2650.4 g / 26.0 N
 OK
60 °C -4.4% 2.59 kg / 5.71 pounds
2590.8 g / 25.4 N
80 °C -6.6% 2.53 kg / 5.58 pounds
2531.1 g / 24.8 N
100 °C -28.8% 1.93 kg / 4.25 pounds
1929.5 g / 18.9 N
Ordinary NdFeB products irreversibly lose parameters after exceeding the maximum temperature. Protect against heat – high temperature can permanently demagnetize this product. With every degree above norm, the magnet's force momentarily drops. Refrain from using this product close to ovens exceeding its operating temperature limit. Ignoring the limit will lead to permanent loss of magnetism.
*Important note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) risk losing magnetic properties at lower temperatures than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field range
MP 15x7/3.5x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.48 kg / 7.68 pounds
3 483 Gs
0.52 kg / 1.15 pounds
523 g / 5.1 N
 N/A
1 mm 3.24 kg / 7.14 pounds
3 846 Gs
0.49 kg / 1.07 pounds
486 g / 4.8 N
 2.91 kg / 6.43 pounds
~0 Gs
2 mm 2.94 kg / 6.49 pounds
3 666 Gs
0.44 kg / 0.97 pounds
441 g / 4.3 N
 2.65 kg / 5.84 pounds
~0 Gs
3 mm 2.62 kg / 5.78 pounds
3 460 Gs
0.39 kg / 0.87 pounds
393 g / 3.9 N
 2.36 kg / 5.20 pounds
~0 Gs
5 mm 1.98 kg / 4.36 pounds
3 004 Gs
0.30 kg / 0.65 pounds
296 g / 2.9 N
 1.78 kg / 3.92 pounds
~0 Gs
10 mm 0.81 kg / 1.78 pounds
1 919 Gs
0.12 kg / 0.27 pounds
121 g / 1.2 N
 0.73 kg / 1.60 pounds
~0 Gs
20 mm 0.11 kg / 0.25 pounds
724 Gs
0.02 kg / 0.04 pounds
17 g / 0.2 N
 0.10 kg / 0.23 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
88 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
54 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
35 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
24 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
17 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
13 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of magnet-to-magnet generates a stronger field and a further horizon of performance. Designing a strong closure? Utilize two neodymiums instead of one magnet and a steel. Be careful that when attracting two neodymiums, the impact force is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center of the gap (due to field cancellation).
Attention: Figures apply to friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MP 15x7/3.5x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Remote 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
Powerful magnet radiation poses a real danger to IT equipment and pacemakers. These magnets generate a field that destroys function of sensitive medical devices. Remember: the unseen radiation passes through tissues and plastic. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MP 15x7/3.5x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.12 km/h
(6.98 m/s)
 0.09 J
30 mm 25.48 km/h
(7.08 m/s)
 0.09 J
50 mm 25.48 km/h
(7.08 m/s)
 0.09 J
100 mm 25.48 km/h
(7.08 m/s)
 0.09 J
Magnetic elements are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can cause material chips or injury to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Corrosion resistance
MP 15x7/3.5x3 / 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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MP 15x7/3.5x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 461 Mx 34.6 µWb
Pc Coefficient 0.26 Low (Flat)
Flux value passing through the pole surface. Essential parameter in coil applications and motors. The Pc coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 15x7/3.5x3 / N38

Environment Effective steel pull Effect
Air (land) 2.71 kg Standard
Water (riverbed) 3.10 kg
(+0.39 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Note: On a vertical wall, the magnet holds merely approx. 20-30% of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Power loss vs temp

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.26

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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 specification and ecology

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%

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: 030182-2026
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The ring magnet with a hole MP 15x7/3.5x3 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. This product with a force of 2.71 kg works great as a cabinet closure, speaker holder, or mounting element in devices.
This is a crucial issue when working with model MP 15x7/3.5x3 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer under the screw head, which will cushion the stresses. 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 easily scratched 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.
A screw or bolt with a thread diameter smaller than 7/3.5 mm fits this model. 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 (15 mm), so it doesn't protrude beyond the outline.
This model is characterized by dimensions Ø15x3 mm and a weight of 3.76 g. The pulling force of this model is an impressive 2.71 kg, which translates to 26.61 N in newtons. The mounting hole diameter is precisely 7/3.5 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (theoretically),
  • They are noted for resistance to demagnetization induced by external magnetic fields,
  • The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to the option of accurate shaping and customization to individualized solutions, neodymium magnets can be produced in a broad palette of shapes and sizes, which amplifies use scope,
  • Fundamental importance in high-tech industry – they serve a role in hard drives, brushless drives, precision medical tools, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:
  • 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
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of creating threads in the magnet and complex shapes - preferred is cover - magnet mounting.
  • Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices can complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

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

The declared magnet strength refers to the peak performance, obtained under optimal environment, meaning:
  • using a base made of low-carbon steel, acting as a ideal flux conductor
  • possessing a thickness of min. 10 mm to avoid saturation
  • with a surface cleaned and smooth
  • without the slightest insulating layer between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • in neutral thermal conditions

Determinants of lifting force in real conditions

In real-world applications, the real power depends on several key aspects, presented from crucial:
  • Distance – existence of any layer (rust, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Direction of force – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was determined with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Warnings
Product not for children

NdFeB magnets are not intended for children. Accidental ingestion of several magnets may result in them attracting across intestines, which poses a critical condition and requires immediate surgery.

Implant safety

Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Keep away from computers

Device Safety: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Power loss in heat

Keep cool. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Fire risk

Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Conscious usage

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

Threat to navigation

Remember: neodymium magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, tablet, and navigation systems.

Finger safety

Risk of injury: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Material brittleness

Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Warning for allergy sufferers

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and use protective gear.

Important! Want to know more? Check our post: Are neodymium magnets dangerous?