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

UMH 42x9x46 [M6] / N38 - magnetic holder with hook - ujęcie 2

Product available Ships in 2 days

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

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

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

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35.99 ZŁ with VAT / pcs + price for transport

29.26 ZŁ net + 23% VAT / pcs

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Physical properties - 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

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

Technical and environmental data

Elemental analysis

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: 310429-2025

Measurement Calculator

Pulling force

Force (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Input a figure in just one field to see the conversion for the other units right away.

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Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). It is a universal hanger that you can move to another place at any time without a trace.

Yes, the hook is an element screwed into a bushing with a metric thread (e.g., M4, M5, M6 - check description). Check the thread size in the product specification to select matching replacements.

You will get the greatest force by mounting the magnet on a thick, smooth steel surface vertically. For heavy ceiling ads or tools, we recommend choosing a magnet with a considerable power reserve.

The cup acts as a magnetic armature, intensifying the neodymium action and increasing efficiency. The housing ensures mechanical durability, which is important in industrial and assembly conditions.

Standard holders are coated with a layer of nickel or zinc, which protects them from corrosion indoors. If you are looking for an outdoor hanger, choose a model in rubberized or plastic housing, which is tight.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Benefits

Besides their immense pulling force, neodymium magnets offer the following advantages:

They do not lose strength, even after approximately 10 years – the drop in power is only ~1% (according to tests),
Magnets very well defend themselves against demagnetization caused by ambient magnetic noise,
A magnet with a shiny gold surface has an effective appearance,
Magnets possess exceptionally strong magnetic induction on the outer layer,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of exact shaping and adjusting to defined requirements,
Versatile presence in electronics industry – they are commonly used in data components, electromotive mechanisms, advanced medical instruments, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices

Disadvantages

Disadvantages of NdFeB magnets:

They are prone to damage 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 lose 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 durability 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 resistant to moisture, in case of application outdoors
We recommend a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to complicate diagnosis medical after entering the body.
With budget limitations the cost of neodymium magnets can be a barrier,

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Holding force of 66.00 kg is a measurement result executed under standard conditions:

with the contact of a yoke made of special test steel, ensuring full magnetic saturation
with a cross-section no less than 10 mm
with a plane free of scratches
with zero gap (no coatings)
under vertical force direction (90-degree angle)
in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Holding efficiency is affected by working environment parameters, such as (from most important):

Clearance – existence of any layer (rust, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the flux to be lost into the air.
Steel type – low-carbon steel attracts best. Alloy steels decrease magnetic permeability and holding force.
Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Threat to electronics

Avoid bringing magnets close to a purse, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.

Fire risk

Dust generated during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Conscious usage

Use magnets consciously. Their immense force can shock even experienced users. Stay alert and respect their force.

Phone sensors

Be aware: neodymium magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your phone, device, and navigation systems.

Danger to the youngest

Strictly store magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.

Power loss in heat

Avoid heat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Fragile material

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Warning for heart patients

People with a pacemaker should maintain an large gap from magnets. The magnetism can disrupt the operation of the life-saving device.

Crushing risk

Large magnets can break fingers instantly. Under no circumstances put your hand between two strong magnets.

Allergy Warning

Some people have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching may cause a rash. We suggest wear protective gloves.

Warning! Details about hazards in the article: Safety of working with magnets.

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Pulling force

Magnetic Field

Other products

MW 35x5 / N38 - cylindrical magnet

MPL 50x25x12 / N38 - lamellar magnet

SMZR 25x250 / N52 - magnetic separator with handle

UI 45x13x6 [C321] / N38 - badge holder

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Disadvantages

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Practical aspects of lifting capacity – factors

Precautions when working with neodymium magnets

Threat to electronics

Fire risk

Conscious usage

Phone sensors

Danger to the youngest

Power loss in heat

Fragile material

Warning for heart patients

Crushing risk

Allergy Warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.