UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

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UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180315

GTIN: 5906301813712

Diameter Ø [±0,1 mm]

16 mm

Height [±0,1 mm]

13 mm

Height [±0,1 mm]

5 mm

Weight

6.6 g

Load capacity

5 kg / 49.03 N

3.80 ZŁ with VAT / pcs + price for transport

3.09 ZŁ net + 23% VAT / pcs

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UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

Specification/characteristics UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

properties

values

Cat. no.

180315

GTIN

5906301813712

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

16 mm [±0,1 mm]

Height

13 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

6.6 g [±0,1 mm]

Load capacity ~ ?

5 kg / 49.03 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

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

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

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Magnetic holders with internal thread are versatile accessories, used in industrial as well as everyday uses, e.g. in engineering. They consist of a magnet, typically NdFeB, embedded within a steel shell, coated with zinc for corrosion protection. The internal thread, available in sizes from M4 to M8, enables insertion of bolts, which simplifies assembly of various items, such as nameplates, tools, or lights. They operate via a powerful magnetic zone, that focuses in the contact area, ensuring load capacity from 1.3 kg to 60 kg, based on mounting dimensions. They are especially useful in vehicle manufacturing, e.g. for attaching body panels, and also in marketing, for poster placement. Certain types come with a rubber shell, e.g. in black or yellow colors, helping prevent surface damage and improves moisture resistance. Advantages cover high durability, simple mounting thanks to the thread, as well as the option to move massive steel components. However, the grip strength depends on surface thickness, type of steel, and the gap between holder and object. Preventing mechanical shocks is crucial, since neodymium magnets are fragile, and over-tightening the bolt can cause damage. Moreover, a magnetic zone may interfere with electronics, such as smartphones or magnetic cards, therefore mounts should be stored away from those devices. It is recommended to choose holders from reputable manufacturers, to guarantee reliability and safety during use.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after 10 years, the decline in efficiency is only ~1% (according to literature),
They protect against demagnetization induced by surrounding magnetic influence remarkably well,
The use of a decorative silver surface provides a refined finish,
The outer field strength of the magnet shows advanced magnetic properties,
Thanks to their exceptional temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C or more,
Thanks to the flexibility in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in various configurations, which expands their application range,
Key role in modern technologies – they find application in HDDs, electromechanical systems, healthcare devices along with high-tech tools,
Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of NdFeB magnets:

They are fragile when subjected to a powerful impact. If the magnets are exposed to mechanical hits, we recommend in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from fracture and increases its overall durability,
High temperatures may significantly reduce the strength of neodymium magnets. Typically, above 80°C, they experience permanent loss in performance (depending on height). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
Magnets exposed to damp air can corrode. Therefore, for outdoor applications, we advise waterproof types made of plastic,
Limited ability to create precision features in the magnet – the use of a housing is recommended,
Possible threat related to magnet particles may arise, if ingested accidentally, which is significant in the family environments. Furthermore, miniature parts from these magnets have the potential to disrupt scanning once in the system,
Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Caution with Neodymium Magnets

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

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

To use magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

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

If you have a finger between or on the path of attracting magnets, there may be a serious cut or a fracture.

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.

Avoid contact with neodymium magnets if you have a nickel allergy.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as 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.

Neodymium magnetic are delicate as well as can easily crack and shatter.

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. At the moment of collision between the magnets, small metal fragments can be dispersed in different directions.

Never bring neodymium magnets close to a phone and GPS.

Neodymium magnets generate intense magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets can become demagnetized at high temperatures.

Despite the general resilience of magnets, their ability to retain their magnetic strength can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

You should keep neodymium magnets at a safe distance from the wallet, computer, and TV.

Magnetic fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

It is essential to keep neodymium magnets out of reach from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Exercise caution!

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