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

product parameters »

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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Force and form of a neodymium magnet can be analyzed on our magnetic mass calculator.

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Physical properties - 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

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%

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: 310424-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Newtons (N)

lbs

Magnetic Field

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They serve to create mobile suspension points without the need to drill holes in beams. In workshops and garages, they work perfectly for guiding cables or hanging work lighting.

The tip is fully demountable - you can unscrew the hook and screw in a bolt, eyelet, or other element in its place. 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. 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. 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. If you are looking for an outdoor hanger, choose a model in rubberized or plastic housing, which is tight.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Pros

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

They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
They are noted for resistance to demagnetization induced by external magnetic fields,
In other words, due to the aesthetic surface of silver, the element gains visual value,
They feature high magnetic induction at the operating surface, which increases their power,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
Possibility of exact machining as well as optimizing to concrete requirements,
Significant place in innovative solutions – they are commonly used in HDD drives, motor assemblies, advanced medical instruments, and other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in miniature devices

Weaknesses

What to avoid - cons of neodymium magnets and ways of using them

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
Neodymium magnets lose their power 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
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in realizing threads and complex forms in magnets, we propose using a housing - magnetic mechanism.
Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, including:

on a plate made of mild steel, optimally conducting the magnetic flux
with a cross-section no less than 10 mm
with a plane perfectly flat
under conditions of ideal adhesion (metal-to-metal)
under axial force vector (90-degree angle)
at standard ambient temperature

What influences lifting capacity in practice

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

Distance – the presence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
Plate thickness – too thin sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
Steel type – low-carbon steel gives the best results. Alloy steels lower magnetic permeability and holding force.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Safe operation

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

Heat warning

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Avoid contact if allergic

Certain individuals have a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause skin redness. It is best to use protective gloves.

Finger safety

Protect your hands. Two large magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Dust is flammable

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

Cards and drives

Do not bring magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Pacemakers

Medical warning: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Threat to navigation

An intense magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.

Fragile material

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into shards.

Danger to the youngest

Only for adults. Small elements pose a choking risk, causing severe trauma. Store out of reach of children and animals.

Security! Looking for details? Check our post: Why are neodymium magnets dangerous?

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Magnetic Field

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MW 9x3 / N38 - cylindrical magnet

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

What influences lifting capacity in practice

Precautions when working with neodymium magnets

Safe operation

Heat warning

Avoid contact if allergic

Finger safety

Dust is flammable

Cards and drives

Pacemakers

Threat to navigation

Fragile material

Danger to the youngest

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.