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

Product available Ships tomorrow

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

technical details »

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 alternatively let us know through our online form the contact page.
Force and shape of neodymium magnets can be calculated using our online calculation tool.

Orders placed before 14:00 will be shipped the same business day.

Technical data - 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

Material specification

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

Force (pull)

Force in kg

Force (N)

lbs

Magnetic Induction

Induction (Gs)

Put a figure in a single slot to generate results in the other units immediately.

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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.

The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. This gives huge application flexibility and allows adapting the holder to current needs.

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 steel housing (cup) shields the magnetic field, directing all its power downwards, onto the contact surface. 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.

Strengths and weaknesses of rare earth magnets.

Strengths

Apart from their consistent power, neodymium magnets have these key benefits:

They retain attractive force for almost ten years – the drop is just ~1% (based on simulations),
Magnets very well protect themselves against demagnetization caused by foreign field sources,
A magnet with a smooth silver surface looks better,
The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
Thanks to versatility in forming and the capacity to adapt to individual projects,
Versatile presence in advanced technology sectors – they find application in data components, electric motors, diagnostic systems, as well as technologically advanced constructions.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only protects 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 and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing threads and complicated shapes in magnets, we propose using a housing - magnetic mount.
Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can complicate diagnosis medical after entering the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Holding force of 7.50 kg is a theoretical maximum value executed under specific, ideal conditions:

using a base made of mild steel, serving as a circuit closing element
whose thickness reaches at least 10 mm
with a surface free of scratches
under conditions of ideal adhesion (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
at room temperature

Determinants of practical lifting force of a magnet

Effective lifting capacity is affected by working environment parameters, such as (from most important):

Distance (between the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Load vector – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
Surface quality – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Warnings

Bodily injuries

Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

Thermal limits

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

Eye protection

Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets will cause them shattering into small pieces.

Threat to electronics

Device Safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Machining danger

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

GPS and phone interference

Be aware: neodymium magnets produce a field that disrupts sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.

Nickel allergy

A percentage of the population have a contact allergy to nickel, which is the common plating for neodymium magnets. Prolonged contact may cause dermatitis. It is best to use safety gloves.

This is not a toy

Always keep magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are tragic.

Medical implants

People with a heart stimulator should keep an large gap from magnets. The magnetic field can interfere with the operation of the life-saving device.

Do not underestimate power

Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can react.

Security! Learn more about risks in the article: Safety of working with magnets.

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Sustainability

Force (pull)

Magnetic Induction

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Strengths and weaknesses of rare earth magnets.

Strengths

Cons

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Determinants of practical lifting force of a magnet

Warnings

Bodily injuries

Thermal limits

Eye protection

Threat to electronics

Machining danger

GPS and phone interference

Nickel allergy

This is not a toy

Medical implants

Do not underestimate power

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C