FAQ
Order Status

e-mail: bok@dhit.pl

Powerful neodymium magnets: discs and cylinders

Need strong magnetic field? Our range includes wide selection of disc, cylindrical and ring magnets. Perfect for for domestic applications, garage and industrial tasks. Browse assortment with fast shipping.

see magnet catalog

Equipment for treasure hunters

Start your adventure related to seabed exploration! Our double-handle grips (F200, F400) provide safety guarantee and immense power. Solid, corrosion-resistant housing and reinforced ropes are reliable in any water.

find searching equipment

Reliable threaded grips

Proven solutions for mounting without drilling. Threaded mounts (M8, M10, M12) provide instant organization of work on warehouses. They are indispensable installing lamps, sensors and ads.

see available threads

🚚 Order by 14:00 – we'll ship same day!

Dhit sp. z o.o.
0
0.00 ZŁ
  1. home
  2. handles magnets internal hook as well as hook type-e
  3. magnet with hook umh 42x9x46 [m6] / n38
← previous
next →
Product available Ships in 3 days

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310429

GTIN/EAN: 5906301814580

5.00

Diameter Ø

42 mm [±1 mm]

Height

46 mm [±1 mm]

Height

9 mm [±1 mm]

Weight

90 g

Magnetization Direction

↑ axial

Load capacity

66.00 kg / 647.24 N

Coating

[NiCuNi] Nickel

see properties »

35.99 ZŁ with VAT / pcs + price for transport

29.26 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
29.26 ZŁ
35.99 ZŁ
price from 20 pcs
27.50 ZŁ
33.83 ZŁ
price from 30 pcs
25.75 ZŁ
31.67 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Not sure about your choice?

Pick up the phone and ask +48 22 499 98 98 alternatively let us know by means of contact form through our site.
Parameters along with structure of a magnet can be reviewed on our magnetic calculator.

Same-day shipping for orders placed before 14:00.

Technical details - UMH 42x9x46 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 42x9x46 [M6] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310429
GTIN/EAN 5906301814580
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 42 mm [±1 mm]
Height 46 mm [±1 mm]
Height 9 mm [±1 mm]
Weight 90 g
Magnetization Direction ↑ axial
Load capacity ~ ? 66.00 kg / 647.24 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 42x9x46 [M6] / N38 - magnetic holder with hook
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. 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 312 - 380 °C
Curie Temperature TF 593 - 716 °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 data and GPSR
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%
Sustainability
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: 310429-2026
Quick Unit Converter
Pulling force
Magnetic Induction
Just populate one field, to let the calculator calculate everything else instantly.

Other products

MW 29x10 / N38 - cylindrical magnet
Product available Ships in 3 days

MW 29x10 / N38 - cylindrical magnet

17.34 ZŁ brutto / pcs
MW 10x10 / N38 - cylindrical magnet
Product available Ships in 3 days

MW 10x10 / N38 - cylindrical magnet

4.31 ZŁ brutto / pcs
MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet
Product available Ships in 3 days

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

15.07 ZŁ brutto / pcs
MPL 30x15x2 / N38 - lamellar magnet
Product available Ships in 3 days

MPL 30x15x2 / N38 - lamellar magnet

3.89 ZŁ brutto / pcs
Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). You can use them to organize wires, hang tools, or clothes on metal racks.
The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. This gives huge application flexibility and allows adapting the holder to current needs.
The nominal capacity (e.g., 66.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).
The steel housing (cup) shields the magnetic field, directing all its power downwards, onto the contact surface. The housing ensures mechanical durability, which is important in industrial and assembly conditions.
In the bathroom or kitchen, they will work perfectly, provided they are not directly splashed with water. If you are looking for an outdoor hanger, choose a model in rubberized or plastic housing, which is tight.

Pros and cons of rare earth magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain magnetic properties for almost 10 years – the loss is just ~1% (in theory),
  • They have excellent resistance to magnetism drop when exposed to external magnetic sources,
  • Thanks to the smooth finish, the plating of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
  • Magnets have extremely high magnetic induction on the active area,
  • 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 freedom in shaping and the capacity to modify to client solutions,
  • Wide application in future technologies – they are commonly used in magnetic memories, electromotive mechanisms, advanced medical instruments, and modern systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • 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, when using outdoors
  • Limited possibility of producing nuts in the magnet and complicated forms - recommended is casing - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these products can disrupt the diagnostic process medical after entering the body.
  • With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

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

The declared magnet strength refers to the maximum value, recorded under laboratory conditions, meaning:
  • with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an polished touching surface
  • with direct contact (without coatings)
  • during detachment in a direction perpendicular to the mounting surface
  • at temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

Holding efficiency impacted by specific conditions, mainly (from priority):
  • Distance (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Material type – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Temperature – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.

Warnings
Impact on smartphones

GPS units and smartphones are highly sensitive to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Skin irritation risks

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.

Combustion hazard

Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Physical harm

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Safe operation

Handle magnets consciously. Their powerful strength can shock even experienced users. Be vigilant and do not underestimate their power.

Maximum temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Life threat

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

Magnets are brittle

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Product not for children

NdFeB magnets are not toys. Eating several magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Safety First! More info about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98