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

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

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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

technical specifications »

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 in kg

Force (N)

lbs

Field Strength

Gauss (Gs)

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A hook magnet is an ideal solution for quick mounting of banners, signs, and markings on steel ceiling structures. It is a universal hanger that you can move to another place at any time without a trace.

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.

The nominal capacity (e.g., 66.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. 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. The housing ensures mechanical durability, which is important in industrial and assembly conditions.

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 neodymium magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:

Their magnetic field is maintained, and after approximately ten years it decreases only by ~1% (according to research),
They possess excellent resistance to weakening of magnetic properties due to external magnetic sources,
In other words, due to the reflective surface of nickel, the element becomes visually attractive,
The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
Possibility of accurate creating as well as modifying to precise requirements,
Universal use in electronics industry – they are used in mass storage devices, drive modules, precision medical tools, and modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in creating threads and complex forms in magnets, we propose using a housing - magnetic mount.
Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical when they are in the body.
Due to complex production process, their price is relatively high,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

The specified lifting capacity represents the maximum value, measured under laboratory conditions, namely:

on a base made of structural steel, perfectly concentrating the magnetic field
possessing a thickness of min. 10 mm to ensure full flux closure
characterized by even structure
without any clearance between the magnet and steel
for force applied at a right angle (in the magnet axis)
in temp. approx. 20°C

Determinants of lifting force in real conditions

Holding efficiency is influenced by specific conditions, including (from most important):

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Direction of force – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost to the other side.
Steel grade – ideal substrate is pure iron steel. Cast iron may attract less.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
Thermal environment – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

H&S for magnets

Fire risk

Dust produced during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Material brittleness

Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Implant safety

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Protect data

Intense magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Safe operation

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Hand protection

Big blocks can smash fingers in a fraction of a second. Never put your hand betwixt two attracting surfaces.

Magnetic interference

An intense magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Maintain magnets close to a smartphone to prevent breaking the sensors.

Nickel allergy

Certain individuals suffer from a sensitization to Ni, which is the common plating for neodymium magnets. Extended handling can result in skin redness. It is best to use protective gloves.

Adults only

Always store magnets out of reach of children. Choking hazard is significant, and the effects of magnets clamping inside the body are fatal.

Maximum temperature

Avoid heat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Caution! More info about risks in the article: Magnet Safety Guide.

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

Field Strength

View more offers

MPL 60x20x10 / N38 - lamellar magnet

AM szekla [M10] - magnetic accessories

MPL 50x50x25 / N38 - lamellar magnet

MW 12x2 / N38 - cylindrical magnet

Pros and cons of neodymium magnets.

Pros

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Determinants of lifting force in real conditions

H&S for magnets

Fire risk

Material brittleness

Implant safety

Protect data

Safe operation

Hand protection

Magnetic interference

Nickel allergy

Adults only

Maximum temperature

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C