← previous
next →
Product available Ships today (order by 14:00)

UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread

magnetic holder rubber internal thread

Catalog no 160307

GTIN/EAN: 5906301813651

5.00

Diameter Ø

43 mm [±1 mm]

Height

6 mm [±1 mm]

Weight

29 g

Load capacity

8.70 kg / 85.32 N

technical details »

10.46 ZŁ with VAT / pcs + price for transport

8.50 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
8.50 ZŁ
10.46 ZŁ
price from 50 pcs
7.99 ZŁ
9.83 ZŁ
price from 100 pcs
7.48 ZŁ
9.20 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Not sure where to buy?

Give us a call +48 888 99 98 98 alternatively contact us through inquiry form the contact form page.
Specifications and structure of a neodymium magnet can be calculated with our our magnetic calculator.

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

Physical properties - UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread

Specification / characteristics - UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread

properties
properties values
Cat. no. 160307
GTIN/EAN 5906301813651
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 43 mm [±1 mm]
Height 6 mm [±1 mm]
Weight 29 g
Load capacity ~ ? 8.70 kg / 85.32 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread
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
Chemical composition
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%
Environmental data
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: 160307-2026
Quick Unit Converter
Pulling force
Field Strength
Input your value in a single field to get results in all other units at once.

Other deals

UMH 36x8x46 [M6] / N38 - magnetic holder with hook
Product available Ships today (order by 14:00)

UMH 36x8x46 [M6] / N38 - magnetic holder with hook

26.64 ZŁ brutto / pcs
SM 19x225 [2xM6] / N50 - magnetic separator
Product available Ships today (order by 14:00)

SM 19x225 [2xM6] / N50 - magnetic separator

528.90 ZŁ brutto / pcs
NC kulka fi 2 cale / N52 - neocube
Product available Ships today (order by 14:00)

NC kulka fi 2 cale / N52 - neocube

1200.00 ZŁ brutto / pcs
MPL 50x25x12 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 50x25x12 / N38 - lamellar magnet

45.51 ZŁ brutto / pcs
Magnets in rubber were created for safe mounting on delicate painted surfaces, such as car bodies or machine casings. They are standard in the advertising industry (car wrapping, foil fixing), lighting (LED work lamps), and mobile monitoring. The internal threaded bushing allows easy screwing of any element, creating a solid mounting point without drilling holes in the sheet metal.
Yes, thanks to the hermetic rubber coating, these magnets are fully waterproof and protected against corrosion. They can be safely used outdoors all year round, maintaining their properties in a wide temperature range. This is the best choice for mounting on a car roof, because you can be sure that rusty stains will not appear on the paint after rain.
Rubber has a very high coefficient of friction, which makes the holder extremely difficult to move sideways (high shear force acts). Thanks to this, these magnets hold onto the car roof excellently even at high speeds and wind resistance. They ensure safety of mounting under vibrations, which is crucial in transport and automotive.
You can screw any metric bolt, hook, handle, cable holder into the magnet or screw the device housing directly. This enables quick creation of a magnetic base for work lighting, reversing cameras, sensors, or advertising boards.
Such an arrangement makes the field very strong right at the rubber (high lifting capacity) but quickly fades with distance. Thanks to this, the magnet holds the sheet metal strongly but does not disturb devices in the cabin or attract metal objects from afar.

Advantages and disadvantages of neodymium magnets.

Pros

Apart from their strong holding force, neodymium magnets have these key benefits:
  • Their power is durable, and after approximately 10 years it drops only by ~1% (according to research),
  • They feature excellent resistance to magnetic field loss as a result of opposing magnetic fields,
  • The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures reaching 230°C and above...
  • Thanks to freedom in constructing and the capacity to modify to unusual requirements,
  • Huge importance in future technologies – they serve a role in mass storage devices, electromotive mechanisms, medical devices, also multitasking production systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures 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 ability of making threads in the magnet and complicated shapes - preferred is a housing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small elements of these products can complicate diagnosis medical in case of swallowing.
  • With mass production the cost of neodymium magnets can be a barrier,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

Breakaway force was defined for the most favorable conditions, assuming:
  • with the contact of a sheet made of special test steel, ensuring maximum field concentration
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with an ideally smooth touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • in stable room temperature

Practical aspects of lifting capacity – factors

It is worth knowing that the working load will differ depending on the following factors, starting with the most relevant:
  • Gap (between the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the flux to be lost to the other side.
  • Steel grade – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
  • Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.

Warnings
Electronic hazard

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

Allergic reactions

Some people have a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to dermatitis. We suggest wear safety gloves.

This is not a toy

These products are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which poses a critical condition and requires urgent medical intervention.

Bodily injuries

Risk of injury: The attraction force is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.

Warning for heart patients

Life threat: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Maximum temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Keep away from electronics

GPS units and mobile phones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Immense force

Handle magnets with awareness. Their huge power can surprise even experienced users. Plan your moves and respect their force.

Beware of splinters

Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.

Fire risk

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

Security! Details about risks in the article: Magnet Safety Guide.