UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

Product available Ships tomorrow

UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

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

search holder

Catalog no 210452

GTIN/EAN: 5906301814122

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

1800 g

Load capacity

601.00 kg / 5893.80 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 20 000 Gauss [±5%]

product details »

245.00 ZŁ with VAT / pcs + price for transport

199.19 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

199.19 ZŁ

245.00 ZŁ

price from 10 pcs

187.24 ZŁ

230.30 ZŁ

price from 15 pcs

175.29 ZŁ

215.60 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Contact us by phone +48 22 499 98 98 otherwise let us know through inquiry form the contact page.
Strength as well as form of magnets can be calculated with our magnetic mass calculator.

Order by 14:00 and we’ll ship today!

💡 Check why professionals choose Dhit over cheap substitutes

Don't be fooled by amateur online tests – go for certified quality and specific parameters that guarantee success:

📏 Magnet thickness in the casing (min. 10mm) – This is what matters most! Thin magnets are weak. Thanks to the 1cm thickness of N52 neodymium, your magnet "sees" metal even through thick rust and mud.
🛡️ Armored protection (Black Epoxy) – Forget about rust. This coating doesn't chip when hitting rocks and protects the magnet in water much better than regular nickel, which fails quickly.
🧲 Eyelets that don't steal power – Made of special non-magnetic steel, so they don't stick to the magnet and don't block the force. Important: mount only one eyelet at a time! Using 3 at once is a mistake that weakens the magnet.
🧶 Certified rope (min. 8mm) – You gain the certainty that your gear won't stay at the bottom. It's thick and comfortable, so it doesn't cut your fingers when pulling out heavy scrap metal.
🚀 Our advantage: We are the only ones combining the strongest N52 neodymium (10mm thick) with non-magnetic eyelets. This is real power and durability you won't find anywhere else.

Invest in solid equipment and enjoy the results!

Detailed specification - UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

Specification / characteristics - UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

properties

properties	values
Cat. no.	210452
GTIN/EAN	5906301814122
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	75 mm [±1 mm]
Height	25 mm [±1 mm]
Weight	1800 g
Load capacity ~ ?	601.00 kg / 5893.80 N
Coating	[NiCuNi] Nickel
Series	GOLD
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 20 000 Gauss [±5%]
Size/Mount Quantity	4xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

properties	values	units
remenance Br [min. - max.] ?	12.9-13.2	kGs
remenance Br [min. - max.] ?	1290-1320	mT
coercivity bHc ?	10.8-12.0	kOe
coercivity bHc ?	860-955	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	40-42	BH max MGOe
energy density [min. - max.] ?	318-334	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

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%

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: 210452-2026

Measurement Calculator

Force (pull)

Force (N)

lbs

Field Strength

Induction (Gs)

Tesla (T)

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

View also proposals

Product available Ships tomorrow

UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

300.00 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

15.07 ZŁ brutto / pcs

Product available Ships tomorrow

UMGGW 34x8 [M4] GW / N38 - magnetic holder rubber internal thread

9.84 ZŁ brutto / pcs

Product available Ships tomorrow

MW 55x25 / N38 - cylindrical magnet

154.21 ZŁ brutto / pcs

The best choice are magnets in thick, chrome-plated housings dedicated to water applications. This specific magnet ensures a laboratory lifting capacity of up to 601.00 kg, which translates into high effectiveness in water. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. The double-sided version increases search efficiency by 100%.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). Avoid throwing the magnet against bridge pillars or hard obstacles. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

This force applies to perfect adherence with the entire surface to a smooth, clean steel plate with a min. thickness of 20mm. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. A large power reserve is essential in real search conditions.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

By choosing Dhit GOLD mounts, you receive a higher quality standard and true magnetic power for the average cost.

Most magnets on the market have weak shells that crack during the any strong impact against concrete or rocks.

You should know that the same mount used by the lateral point often has as little as a fraction of strength instead of the declared 200 kg. Crucially, in the web, there are virtually no recordings demonstrating the actual strength of other brands on the side hook.

{In contrast to anonymous sellers, Dhit provides full support and real service assistance, which gives peace of mind after the transaction. Every mount is individually inspected before delivery, which ensures that you receive equipment of the highest quality.

Advantages and disadvantages of rare earth magnets.

Pros

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

They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
Neodymium magnets are distinguished by remarkably resistant to demagnetization caused by magnetic disturbances,
The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
Due to the ability of precise molding and customization to individualized projects, neodymium magnets can be produced in a wide range of forms and dimensions, which makes them more universal,
Universal use in electronics industry – they serve a role in mass storage devices, electromotive mechanisms, medical equipment, and technologically advanced constructions.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in realizing nuts and complicated shapes in magnets, we propose using casing - magnetic mechanism.
Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum holding power of the magnet – what affects it?

The load parameter shown refers to the maximum value, measured under laboratory conditions, meaning:

with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
with a cross-section of at least 10 mm
characterized by even structure
with total lack of distance (without paint)
for force applied at a right angle (pull-off, not shear)
at conditions approx. 20°C

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on many variables, ranked from crucial:

Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
Plate material – mild steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
Temperature – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets

Cards and drives

Equipment safety: Strong magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Keep away from children

Always store magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are life-threatening.

GPS and phone interference

GPS units and smartphones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Bone fractures

Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.

Conscious usage

Exercise caution. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.

Do not overheat magnets

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Material brittleness

Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Fire risk

Powder produced during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Pacemakers

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Nickel allergy

Medical facts indicate that nickel (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose versions in plastic housing.

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

UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

Detailed specification - UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

View also proposals

UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

UMGGW 34x8 [M4] GW / N38 - magnetic holder rubber internal thread

MW 55x25 / N38 - cylindrical magnet

Advantages and disadvantages of rare earth magnets.

Pros

Cons

Pull force analysis

Maximum holding power of the magnet – what affects it?

Key elements affecting lifting force

Safety rules for work with NdFeB magnets

Cards and drives

Keep away from children

GPS and phone interference

Bone fractures

Conscious usage

Do not overheat magnets

Material brittleness

Fire risk

Pacemakers

Nickel allergy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C