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

Product available Ships today (order by 14:00)

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

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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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Technical data of the product - 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 specification and ecology

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%

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: 180315-2025

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Force in lbs

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The steel cup acts as an armature, concentrating the magnetic flux and increasing capacity even several times. The metal cover secures the magnet against mechanical damage, which is common in workshop conditions. The bushing with internal thread allows easy screwing of any element (bolt, hook, handle).

Too long a screw can pass through the bushing and push out or damage the magnet glued into the bottom of the cup. We recommend checking thread depth before assembly and shortening the screw if necessary. It is worth securing the thread with thread glue if the connection is to be durable and resistant to vibrations.

These holders are commonly used in industry, advertising, and construction for quick mounting. They serve as a base for hooks, cable holders, organizers, and lighting systems. In the workshop, they can serve as mounting points for tools or measuring instruments.

This value applies to perfect adherence with the entire magnet surface. On a thin surface or painted cabinet, the magnet will hold much weaker (even by 50-70%). We always recommend choosing a magnet with power reserve, especially if the surface is not ideal.

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.

Strengths as well as weaknesses of neodymium magnets.

Advantages

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

They do not lose strength, even after approximately 10 years – the drop in strength is only ~1% (theoretically),
They maintain their magnetic properties even under external field action,
The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Magnetic induction on the surface of the magnet turns out to be exceptional,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of individual modeling and optimizing to specific requirements,
Wide application in modern industrial fields – they are used in magnetic memories, electric motors, medical equipment, and other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
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 durability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
Limited ability of producing nuts in the magnet and complicated forms - preferred is cover - magnetic holder.
Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these devices can complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?

The specified lifting capacity represents the maximum value, measured under optimal environment, specifically:

on a base made of structural steel, effectively closing the magnetic flux
possessing a massiveness of at least 10 mm to ensure full flux closure
characterized by smoothness
without any air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
in temp. approx. 20°C

Lifting capacity in practice – influencing factors

Please note that the application force may be lower depending on elements below, in order of importance:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Steel type – low-carbon steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
Surface condition – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a small distance between the magnet and the plate lowers the holding force.

Precautions when working with neodymium magnets

Health Danger

Warning for patients: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Demagnetization risk

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Bodily injuries

Pinching hazard: The pulling power is so great that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Electronic devices

Avoid bringing magnets near a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Protective goggles

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

Dust is flammable

Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Product not for children

Always keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are tragic.

Allergic reactions

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Compass and GPS

A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Do not bring magnets close to a smartphone to prevent damaging the sensors.

Powerful field

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Plan your moves and do not underestimate their force.

Attention! Learn more about risks in the article: Magnet Safety Guide.

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

Technical data of the product - 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

Environmental data

Magnet pull force

Field Strength

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Strengths as well as weaknesses of neodymium magnets.

Advantages

Weaknesses

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Health Danger

Demagnetization risk

Bodily injuries

Electronic devices

Protective goggles

Dust is flammable

Product not for children

Allergic reactions

Compass and GPS

Powerful field

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C