tel: +48 888 99 98 98

neodymium magnets

We offer red color magnets Nd2Fe14B - our store's offer. All magnesy neodymowe in our store are available for immediate delivery (see the list). See the magnet price list for more details see the magnet price list

Magnets for treasure hunters F400 GOLD

Where to purchase strong neodymium magnet? Magnet holders in airtight, solid enclosure are perfect for use in variable and difficult climate conditions, including during rain and snow check...

magnetic holders

Holders with magnets can be applied to facilitate manufacturing, underwater exploration, or searching for space rocks from gold read...

Enjoy shipping of your order if the order is placed before 2:00 PM on business days.

Dhit sp. z o.o. logo
Product available shipping tomorrow

UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190322

GTIN: 5906301813811

5

Diameter Ø [±0,1 mm]

20 mm

Height [±0,1 mm]

15 mm

Height [±0,1 mm]

7 mm

Weight

14 g

Load capacity

9 kg / 88.26 N

7.22 with VAT / pcs + price for transport

5.87 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
5.87 ZŁ
7.22 ZŁ
price from 60 pcs
5.52 ZŁ
6.79 ZŁ
price from 137 pcs
5.17 ZŁ
6.35 ZŁ

Need advice?

Call us now +48 22 499 98 98 alternatively let us know via our online form the contact page.
Parameters and shape of neodymium magnets can be estimated on our modular calculator.

Order by 14:00 and we’ll ship today!

UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread

Specification/characteristics UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread
properties
values
Cat. no.
190322
GTIN
5906301813811
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
20 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Height
7 mm [±0,1 mm]
Weight
14 g [±0,1 mm]
Load capacity ~ ?
9 kg / 88.26 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N38

properties
values
units
coercivity bHc ?
860-915
kA/m
coercivity bHc ?
10.8-11.5
kOe
energy density [Min. - Max.] ?
287-303
BH max KJ/m
energy density [Min. - Max.] ?
36-38
BH max MGOe
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
actual internal force iHc
≥ 955
kA/m
actual internal force iHc
≥ 12
kOe
max. temperature ?
≤ 80
°C

Physical properties of NdFeB

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 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

Mounts with built-in neodymium magnets featuring an external thread offer robust solutions, used in many industries, including construction, agriculture, or advertising. The construction is based on a high-performance NdFeB magnet, embedded in steel housing protected by an anti-corrosion layer. The external thread in sizes M4–M8 allows installation into threaded holes, which makes it possible to screw in various components. With the help of a focused magnetic field, these holders offer a pulling strength of up to 68 kg, depending on the model and size. Applications of the holders include not only workshops and DIY projects. Some versions feature a protective layer, which safeguards mounted elements from damage and increases grip. Note, however, that NdFeB magnets are brittle and are prone to cracking under over-tightened mounting. Caution during installation is recommended, and holders should be kept away from electronics. For best quality, it is advisable to choose certified products.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their exceptional strength, neodymium magnets offer the following advantages:

  • They do not lose their even during around ten years – the loss of power is only ~1% (theoretically),
  • They remain magnetized despite exposure to strong external fields,
  • By applying a bright layer of gold, the element gains a clean look,
  • They exhibit superior levels of magnetic induction near the outer area of the magnet,
  • With the right combination of compounds, they reach significant thermal stability, enabling operation at or above 230°C (depending on the structure),
  • The ability for precise shaping or customization to specific needs – neodymium magnets can be manufactured in multiple variants of geometries, which enhances their versatility in applications,
  • Wide application in advanced technical fields – they find application in hard drives, electric drives, medical equipment along with technologically developed systems,
  • Relatively small size with high magnetic force – neodymium magnets offer strong power in compact dimensions, which allows for use in miniature devices

Disadvantages of neodymium magnets:

  • They are fragile when subjected to a powerful impact. If the magnets are exposed to shocks, they should be placed in a steel housing. The steel housing, in the form of a holder, protects the magnet from damage and additionally increases its overall durability,
  • They lose magnetic force at extreme temperatures. Most neodymium magnets experience permanent loss in strength when heated above 80°C (depending on the geometry and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of protective material for outdoor use,
  • The use of a protective casing or external holder is recommended, since machining internal cuts in neodymium magnets is not feasible,
  • Health risk from tiny pieces may arise, in case of ingestion, which is important in the protection of children. Moreover, minuscule fragments from these devices have the potential to disrupt scanning once in the system,
  • In cases of large-volume purchasing, neodymium magnet cost is a challenge,

We Recommend Caution with Neodymium Magnets

Dust and powder from neodymium magnets are flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Neodymium magnets are not recommended for people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Magnets may crack or alternatively crumble with careless joining to each other. You can't move them to each other. At a distance less than 10 cm you should hold them extremely strongly.

Neodymium magnets are the most powerful magnets ever created, and their power can surprise you.

Familiarize yourself with our information to properly handle these magnets and avoid significant injuries to your body and prevent damage to the magnets.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

The magnet coating is made of nickel, so be cautious if you have an allergy.

Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

  Do not give neodymium magnets to youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In the case of small magnets, they can be swallowed and cause choking. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Strong magnetic fields emitted by neodymium magnets can destroy magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

Neodymium magnetic are highly fragile, they easily crack and can become damaged.

Neodymium magnets are characterized by considerable fragility. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Safety precautions!

Please read the article - What danger lies in neodymium magnets? You will learn how to handle them properly.

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98