UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

Product available Ships tomorrow

UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

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 internal thread

Catalog no 180315

GTIN/EAN: 5906301813712

5.00

Diameter Ø

16 mm [±1 mm]

Height

13 mm [±1 mm]

Height

5 mm [±1 mm]

Weight

6.6 g

Load capacity

5.00 kg / 49.03 N

3.80 ZŁ with VAT / pcs + price for transport

3.09 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

Specification / characteristics UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

properties

properties	values
Cat. no.	180315
GTIN/EAN	5906301813712
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	13 mm [±1 mm]
Height	5 mm [±1 mm]
Weight	6.6 g
Load capacity ~ ?	5.00 kg / 49.03 N
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

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%

Ecology and recycling (GPSR)

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: 180315-2025

Magnet Unit Converter

Force (Pull)

Force (N)

Force in lbs

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A magnetic holder (magnet in a steel cup) is much stronger on one side than a bare magnet of the same dimensions. Moreover, the metal housing protects the brittle neodymium magnet from cracking upon impact. The threaded hole allows creating a functional mounting point in seconds.

Too long a screw can pass through the bushing and push out or damage the magnet glued into the bottom of the cup. If the screw reaches the bottom of the bushing and is further tightened forcefully, it will destroy the magnet. It is worth securing the thread with thread glue if the connection is to be durable and resistant to vibrations.

They are indispensable when building exhibition stands and shop displays (POS systems). They allow mounting without drilling in steel substrate, which is crucial in rented spaces. In the workshop, they can serve as mounting points for tools or measuring instruments.

The stated force is the maximum laboratory value obtained on a clean, smooth sheet. With thin sheets (e.g., car body, fridge casing), the force will be much smaller because steel cannot absorb the entire magnetic field. For side detachment (sliding), the force is only approx. 1/3 of nominal capacity.

The housing has anti-corrosion protection in the form of galvanic zinc or nickel plating. In rain and frost, the coating may degrade over time if not protected. The neodymium magnet itself inside is also nickel-plated.

Advantages as well as disadvantages of rare earth magnets.

Benefits

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
Neodymium magnets prove to be extremely resistant to demagnetization caused by external field sources,
By applying a lustrous layer of nickel, the element presents an proper look,
The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of accurate creating and adapting to defined requirements,
Fundamental importance in advanced technology sectors – they are utilized in mass storage devices, electromotive mechanisms, medical devices, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets: application proposals

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex shapes.
Possible danger to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child health protection. Furthermore, small components of these devices can be problematic in diagnostics 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

Best holding force of the magnet in ideal parameters – what contributes to it?

The load parameter shown refers to the peak performance, obtained under optimal environment, meaning:

with the application of a yoke made of special test steel, ensuring maximum field concentration
whose transverse dimension is min. 10 mm
characterized by lack of roughness
under conditions of ideal adhesion (metal-to-metal)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Determinants of lifting force in real conditions

Holding efficiency is influenced by working environment parameters, mainly (from priority):

Gap (between the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Base massiveness – too thin plate does not accept the full field, causing part of the flux to be escaped into the air.
Steel grade – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets

Warning for heart patients

Patients with a heart stimulator have to maintain an safe separation from magnets. The magnetism can disrupt the functioning of the implant.

Bone fractures

Watch your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

No play value

Product intended for adults. Small elements can be swallowed, leading to severe trauma. Store out of reach of kids and pets.

Threat to electronics

Do not bring magnets close to a wallet, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Do not overheat magnets

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

Avoid contact if allergic

Some people suffer from a contact allergy to Ni, which is the common plating for neodymium magnets. Frequent touching might lead to dermatitis. It is best to use protective gloves.

Mechanical processing

Powder generated during cutting of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Respect the power

Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Magnetic interference

A powerful magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Risk of cracking

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Safety First! Want to know more? Check our post: Why are neodymium magnets dangerous?

UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

Do you have a dilemma?

UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Ecology and recycling (GPSR)

Force (Pull)

Magnetic Field

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UMGZ 25x17x8 [M5] GZ / N38 - magnetic holder external thread

SMZR 25x225 / N52 - magnetic separator with handle

MW 8x15 / N38 - cylindrical magnet

JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

Advantages as well as disadvantages of rare earth magnets.

Benefits

Disadvantages

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

Determinants of lifting force in real conditions

Warning for heart patients

Bone fractures

No play value

Threat to electronics

Do not overheat magnets

Avoid contact if allergic

Mechanical processing

Respect the power

Magnetic interference

Risk of cracking

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C