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

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

Product available Ships today (order by 14:00)

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

35.99 ZŁ with VAT / pcs + price for transport

29.26 ZŁ net + 23% VAT / pcs

bulk discounts:

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25.75 ZŁ

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Contact us by phone +48 22 499 98 98 or let us know using form the contact form page.
Strength along with shape of a magnet can be reviewed with our magnetic mass calculator.

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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

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: 310429-2025

Magnet Unit Converter

Force (pull)

Pounds (lbs)

Field Strength

Simply complete a single box, to let the tool fill in everything else for you.

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1.045 ZŁ brutto / pcs

A hook magnet is an ideal solution for quick mounting of banners, signs, and markings on steel ceiling structures. 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. Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.

You will get the greatest force by mounting the magnet on a thick, smooth steel surface vertically. If you hang the magnet on a wall, the real capacity is approx. 20-30% of the nominal value.

Thanks to the metal cover, attraction force is concentrated, which significantly increases capacity compared to a bare magnet. Additionally, steel protects the brittle magnet from cracking upon hitting the ceiling or beam.

In the bathroom or kitchen, they will work perfectly, provided they are not directly splashed with water. In home and office conditions, they will serve for many years without signs of wear.

Pros and cons of Nd₂Fe₁₄B magnets.

Benefits

Apart from their notable magnetism, neodymium magnets have these key benefits:

They retain full power for around ten years – the loss is just ~1% (in theory),
Neodymium magnets remain extremely resistant to demagnetization caused by external field sources,
In other words, due to the aesthetic finish of gold, the element gains visual value,
Neodymium magnets deliver maximum magnetic induction on a contact point, which increases force concentration,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to modularity in designing and the ability to customize to complex applications,
Versatile presence in modern industrial fields – they serve a role in HDD drives, brushless drives, diagnostic systems, as well as other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Cons of neodymium magnets: application proposals

Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also raises their durability
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated shapes.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

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

Information about lifting capacity was determined for the most favorable conditions, taking into account:

on a plate made of structural steel, optimally conducting the magnetic flux
possessing a massiveness of min. 10 mm to avoid saturation
characterized by lack of roughness
under conditions of ideal adhesion (surface-to-surface)
for force acting at a right angle (pull-off, not shear)
in temp. approx. 20°C

What influences lifting capacity in practice

In practice, the actual lifting capacity is determined by a number of factors, presented from the most important:

Distance (between the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be escaped to the other side.
Material composition – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets

Dust explosion hazard

Machining of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Warning for heart patients

Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.

Skin irritation risks

Studies show that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and choose versions in plastic housing.

Magnetic media

Do not bring magnets close to a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Physical harm

Large magnets can break fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Heat warning

Avoid heat. Neodymium magnets are susceptible to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).

No play value

Always store magnets away from children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are very dangerous.

Magnet fragility

NdFeB magnets are sintered ceramics, which means they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Handling guide

Handle magnets with awareness. Their immense force can shock even experienced users. Stay alert and respect their force.

Impact on smartphones

A powerful magnetic field negatively affects the operation of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a device to avoid damaging the sensors.

Warning! Need more info? Check our post: Are neodymium magnets dangerous?

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

Need advice?

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Environmental data

Force (pull)

Field Strength

Other proposals

MW 35x5 / N38 - cylindrical magnet

MPL 12x10x4 / N38 - lamellar magnet

SM 32x250 [2xM8] / N42 - magnetic separator

MP 10x4.3x4 / N38 - ring magnet

Pros and cons of Nd2Fe14B magnets.

Benefits

Cons

Holding force characteristics

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

What influences lifting capacity in practice

Dust explosion hazard

Warning for heart patients

Skin irritation risks

Magnetic media

Physical harm

Heat warning

No play value

Magnet fragility

Handling guide

Impact on smartphones

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros and cons of Nd₂Fe₁₄B magnets.