UMH 16x5x32 [M4] / N38 - magnetic holder with hook

Product available Ships today (order by 14:00)

UMH 16x5x32 [M4] / 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: PLN 1-6500
Rating: 5

magnetic holder with hook

Catalog no 310424

GTIN/EAN: 5906301814535

5.00

Diameter Ø

16 mm [±1 mm]

Height

32 mm [±1 mm]

Height

5 mm [±1 mm]

Weight

12 g

Magnetization Direction

↑ axial

Load capacity

7.50 kg / 73.55 N

Coating

[NiCuNi] Nickel

see technical data »

4.88 ZŁ with VAT / pcs + price for transport

3.97 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Call us +48 22 499 98 98 if you prefer get in touch via our online form through our site.
Specifications and form of neodymium magnets can be reviewed with our power calculator.

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Technical details - UMH 16x5x32 [M4] / N38 - magnetic holder with hook

Specification / characteristics - UMH 16x5x32 [M4] / N38 - magnetic holder with hook

properties

properties	values
Cat. no.	310424
GTIN/EAN	5906301814535
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	16 mm [±1 mm]
Height	32 mm [±1 mm]
Height	5 mm [±1 mm]
Weight	12 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.50 kg / 73.55 N
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 16x5x32 [M4] / 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

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%

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: 310424-2026

Magnet Unit Converter

Magnet pull force

Force (N)

Force in lbs

Field Strength

Gauss (Gs)

Tesla (T)

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Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). In workshops and garages, they work perfectly for guiding cables or hanging work lighting.

The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. Check the thread size in the product specification to select matching replacements.

The given value defines the maximum load when suspended under a thick, horizontal ceiling beam. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).

Thanks to the metal cover, attraction force is concentrated, which significantly increases capacity compared to a bare magnet. A bare magnet could crack upon sudden application to metal, and the holder is resistant to this.

For outdoor use (in rain), metal hangers may eventually develop a rusty coating over time. In home and office conditions, they will serve for many years without signs of wear.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:

They retain magnetic properties for nearly ten years – the drop is just ~1% (based on simulations),
Neodymium magnets are highly resistant to loss of magnetic properties caused by external magnetic fields,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnets exhibit maximum magnetic induction on the working surface,
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 flexibility in shaping and the ability to modify to individual projects,
Huge importance in high-tech industry – they are utilized in HDD drives, drive modules, medical equipment, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited ability of making nuts in the magnet and complicated forms - preferred is casing - magnet mounting.
Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum magnetic pulling force – what it depends on?

The force parameter is a theoretical maximum value executed under specific, ideal conditions:

with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
with a thickness no less than 10 mm
with an ground touching surface
under conditions of no distance (metal-to-metal)
for force acting at a right angle (in the magnet axis)
in stable room temperature

Determinants of lifting force in real conditions

Holding efficiency impacted by specific conditions, mainly (from priority):

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Load vector – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
Base smoothness – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.

Warnings

Do not give to children

These products are not intended for children. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Do not drill into magnets

Powder produced during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Crushing risk

Risk of injury: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Allergic reactions

It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or select encased magnets.

Risk of cracking

NdFeB magnets are ceramic materials, which means they are prone to chipping. Collision of two magnets leads to them breaking into shards.

Conscious usage

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Keep away from computers

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Compass and GPS

Be aware: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your phone, tablet, and navigation systems.

Demagnetization risk

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

Health Danger

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

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

UMH 16x5x32 [M4] / N38 - magnetic holder with hook

Technical details - UMH 16x5x32 [M4] / N38 - magnetic holder with hook

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Magnet pull force

Field Strength

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MPL 30x5x5 / N38 - lamellar magnet

MPL 40x5x3 / N38 - lamellar magnet

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Cons

Pull force analysis

Maximum magnetic pulling force – what it depends on?

Determinants of lifting force in real conditions

Warnings

Do not give to children

Do not drill into magnets

Crushing risk

Allergic reactions

Risk of cracking

Conscious usage

Keep away from computers

Compass and GPS

Demagnetization risk

Health Danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths and weaknesses of Nd₂Fe₁₄B magnets.