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MW 5x7 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010090

GTIN/EAN: 5906301810896

5.00
Load capacity 0.67 kg / 6.60 N Magnetic Induction 582.40 mT / 5824 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
7 mm [±0,1 mm]
Weight
1.03 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

0.590 zł net / pcs

0.726 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

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 - MW 5x7 / N38 - cylindrical magnet

Specification / characteristics - MW 5x7 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010090
GTIN/EAN 5906301810896
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 Ø 5 mm [±0,1 mm]
Height 7 mm [±0,1 mm]
Weight 1.03 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.67 kg / 6.60 N
Magnetic Induction ~ ? 582.40 mT / 5824 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x7 / N38 - cylindrical 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

Engineering simulation of the assembly - data

These data constitute the outcome of a physical simulation. Values are based on algorithms for the class Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MW 5x7 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5815 Gs
581.5 mT
 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
 safe
1 mm 3615 Gs
361.5 mT
 0.26 kg / 0.57 LBS
259.0 g / 2.5 N
 safe
2 mm 2101 Gs
210.1 mT
 0.09 kg / 0.19 LBS
87.4 g / 0.9 N
 safe
3 mm 1252 Gs
125.2 mT
 0.03 kg / 0.07 LBS
31.1 g / 0.3 N
 safe
5 mm 524 Gs
52.4 mT
 0.01 kg / 0.01 LBS
5.4 g / 0.1 N
 safe
10 mm 119 Gs
11.9 mT
 0.00 kg / 0.00 LBS
0.3 g / 0.0 N
 safe
15 mm 45 Gs
4.5 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
20 mm 21 Gs
2.1 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
30 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
50 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Magnetic force decreases significantly per each millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, paint, rust) strongly weakens the grip. Magnetic products hold optimally at the point of direct contact; distance weakens the force. Observe how rapidly the load capacity drop, when the product does not adhere tightly to the metal substrate. When calculating the arrangement, discard redundant distances.

Table 2: Vertical hold (vertical surface)
MW 5x7 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.13 kg / 0.30 LBS
134.0 g / 1.3 N
1 mm Stal (~0.2) 0.05 kg / 0.11 LBS
52.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 LBS
18.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 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
The following data calculates the estimated weight limit necessary to initiate the sliding of the magnet down on a upright steel wall (assuming standard friction coefficient). This parameter is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 5x7 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.20 kg / 0.44 LBS
201.0 g / 2.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.13 kg / 0.30 LBS
134.0 g / 1.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.15 LBS
67.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.34 kg / 0.74 LBS
335.0 g / 3.3 N
When placing a element on a upright surface (e.g., a car body), it you can count on only approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip mean that products slip easier than they detach. Designing a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will slide down under a significantly smaller load. Utilizing a rubberized layer can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 5x7 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.07 kg / 0.15 LBS
67.0 g / 0.7 N
1 mm
25%
 0.17 kg / 0.37 LBS
167.5 g / 1.6 N
2 mm
50%
 0.34 kg / 0.74 LBS
335.0 g / 3.3 N
3 mm
75%
 0.50 kg / 1.11 LBS
502.5 g / 4.9 N
5 mm
100%
 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
10 mm
100%
 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
11 mm
100%
 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
12 mm
100%
 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
A thin sheet is incapable of take in the full magnetic flux, which squanders power of the holder. Should you install a neodymium to a thin surface, the field will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The saturation effect means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We advise picking the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - power drop
MW 5x7 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.67 kg / 1.48 LBS
670.0 g / 6.6 N
 OK
40 °C -2.2% 0.66 kg / 1.44 LBS
655.3 g / 6.4 N
 OK
60 °C -4.4% 0.64 kg / 1.41 LBS
640.5 g / 6.3 N
 OK
80 °C -6.6% 0.63 kg / 1.38 LBS
625.8 g / 6.1 N
100 °C -28.8% 0.48 kg / 1.05 LBS
477.0 g / 4.7 N
Classic neodymiums irreversibly lose power after exceeding the maximum temperature. Watch out for overheating – heat can permanently destroy this product. With increasing heat, the neodymium's force briefly decreases. Avoid using this product close to ovens higher than its working range. Ignoring the limit will cause irreversible degradation of magnetic properties.
*Technical advisory: Thermal stability is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) are more susceptible to demagnetization sooner than long magnets. Red status in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 5x7 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.09 kg / 9.02 LBS
6 079 Gs
0.61 kg / 1.35 LBS
614 g / 6.0 N
 N/A
1 mm 2.64 kg / 5.81 LBS
9 332 Gs
0.40 kg / 0.87 LBS
395 g / 3.9 N
 2.37 kg / 5.23 LBS
~0 Gs
2 mm 1.58 kg / 3.49 LBS
7 230 Gs
0.24 kg / 0.52 LBS
237 g / 2.3 N
 1.42 kg / 3.14 LBS
~0 Gs
3 mm 0.92 kg / 2.03 LBS
5 516 Gs
0.14 kg / 0.30 LBS
138 g / 1.4 N
 0.83 kg / 1.83 LBS
~0 Gs
5 mm 0.31 kg / 0.69 LBS
3 224 Gs
0.05 kg / 0.10 LBS
47 g / 0.5 N
 0.28 kg / 0.62 LBS
~0 Gs
10 mm 0.03 kg / 0.07 LBS
1 048 Gs
0.00 kg / 0.01 LBS
5 g / 0.0 N
 0.03 kg / 0.07 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
238 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
24 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
15 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
10 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
7 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
5 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
4 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnets attract each other from a much further distance than a neodymium and metal setup. Such a system of two magnets generates a stronger field and a further horizon of action. Designing a solid fastener? Apply two magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the collision energy is huge. The levitation is slightly lower than the attraction, but still large.
*The magnetic induction between like poles reaches ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Results apply to friction force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MW 5x7 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 3.0 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Extremely neodym field poses a real danger to electronics and pacemakers. These NdFeB products generate a field that destroys function of sensitive medical devices. Remember: the unseen radiation passes through tissues and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MW 5x7 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 13.07 km/h
(3.63 m/s)
 0.01 J
30 mm 13.08 km/h
(3.63 m/s)
 0.01 J
50 mm 13.08 km/h
(3.63 m/s)
 0.01 J
100 mm 13.08 km/h
(3.63 m/s)
 0.01 J
Neodymium magnets are prone to chipping – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or painful pinches to skin. Be sure to control the product during mounting so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Anti-corrosion coating durability
MW 5x7 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Pc)
MW 5x7 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 219 Mx 12.2 µWb
Pc Coefficient 1.05 High (Stable)
Total magnetic flux emitted by the magnet pole. Key data when building generators as well as sensors. Pc value determines the working geometry.

Table 11: Physics of underwater searching
MW 5x7 / N38

Environment Effective steel pull Effect
Air (land) 0.67 kg Standard
Water (riverbed) 0.77 kg
(+0.10 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

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

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Temperature resistance

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.05

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: 010090-2026
Measurement Calculator

Magnet pull force

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The presented product is an extremely powerful cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø5x7 mm, guarantees maximum efficiency. The MW 5x7 / N38 component features high dimensional repeatability and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.67 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 6.60 N with a weight of only 1.03 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x7), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø5x7 mm, which, at a weight of 1.03 g, makes it an element with impressive magnetic energy density. The value of 6.60 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.03 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 5 mm. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Benefits

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They are noted for resistance to demagnetization induced by external magnetic fields,
  • Thanks to the reflective finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to freedom in forming and the ability to modify to individual projects,
  • Wide application in modern technologies – they are commonly used in data components, electric drive systems, precision medical tools, as well as technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of NdFeB magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • We suggest casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

The lifting capacity listed is a measurement result conducted under specific, ideal conditions:
  • using a sheet made of high-permeability steel, acting as a magnetic yoke
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • characterized by lack of roughness
  • without any air gap between the magnet and steel
  • under vertical force vector (90-degree angle)
  • in stable room temperature

Lifting capacity in real conditions – factors

In real-world applications, the real power results from several key aspects, presented from the most important:
  • Clearance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be wasted to the other side.
  • Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal environment – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets
Heat sensitivity

Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its properties and strength.

Finger safety

Mind your fingers. Two large magnets will snap together instantly with a force of massive weight, destroying everything in their path. Be careful!

Do not underestimate power

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

Danger to the youngest

Adult use only. Tiny parts can be swallowed, leading to intestinal necrosis. Keep away from kids and pets.

Phone sensors

Remember: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Fragile material

Neodymium magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them breaking into shards.

Skin irritation risks

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent touching magnets with bare hands and opt for coated magnets.

Data carriers

Do not bring magnets near a purse, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Pacemakers

Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Do not drill into magnets

Dust generated during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?