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%]

technical details »

245.00 ZŁ with VAT / pcs + price for transport

199.19 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Call us now +48 22 499 98 98 otherwise send us a note by means of our online form our website.
Parameters along with form of a magnet can be verified with our modular calculator.

Order by 14:00 and we’ll ship today!

💡 Guide: How to choose a decent magnet and not get ripped off?

Instead of believing fairy tales on YouTube with tests on uncertified equipment, see what really determines your magnet's power:

📏 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!

Physical properties - 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%

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: 210452-2025

Magnet Unit Converter

Magnet pull force

Pounds (lbs)

Field Strength

Induction (Gs)

Insert data into any field, and the rest change in real-time.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. It is equipment that can handle pulling heavy and silted objects from the river bottom. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

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%.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). We often add thread glue to secure the eyelet against unscrewing in water. Using thread glue is crucial to not lose the magnet in silt.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

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 same market price.

Consequently, despite the market price, the lifespan of the Dhit product positions it a step above other brands.

You should know that the identical mount pulled by the side hook can actually show only a fraction of power instead of the declared 200 kg. The Dhit brand focuses on full transparency by providing the real parameters of the magnet, so you can be sure during treasure hunting.

{By choosing GOLD mounts, you support a local market leader that knows the specifics of local rivers and lakes. Every mount is checked before shipping, which guarantees that you receive equipment of the highest quality.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They retain full power for almost ten years – the drop is just ~1% (according to analyses),
They show high resistance to demagnetization induced by external disturbances,
Thanks to the smooth finish, the surface of nickel, gold-plated, or silver gives an professional appearance,
Neodymium magnets ensure maximum magnetic induction on a small area, which increases force concentration,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of detailed machining and modifying to individual needs,
Fundamental importance in high-tech industry – they are commonly used in mass storage devices, drive modules, diagnostic systems, and technologically advanced constructions.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as 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 oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited possibility of creating threads in the magnet and complex shapes - recommended is a housing - magnetic holder.
Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these devices can be problematic in diagnostics medical after entering the body.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

Information about lifting capacity was defined for ideal contact conditions, taking into account:

using a sheet made of low-carbon steel, functioning as a circuit closing element
with a cross-section no less than 10 mm
with an ground touching surface
under conditions of no distance (metal-to-metal)
during detachment in a direction vertical to the mounting surface
at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

It is worth knowing that the working load may be lower depending on elements below, in order of importance:

Gap (between the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Material type – ideal substrate is pure iron steel. Cast iron may attract less.
Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets

Nickel coating and allergies

Studies show that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, avoid touching magnets with bare hands or choose versions in plastic housing.

Bone fractures

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Permanent damage

Do not overheat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Dust is flammable

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Fragile material

Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.

Magnetic media

Avoid bringing magnets near a wallet, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Do not give to children

Absolutely store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are tragic.

Do not underestimate power

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

Keep away from electronics

An intense magnetic field negatively affects the functioning of compasses in phones and navigation systems. Keep magnets close to a device to avoid breaking the sensors.

Medical interference

People with a pacemaker have to keep an safe separation from magnets. The magnetism can stop the operation of the life-saving device.

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

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

Physical properties - 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

Environmental data

Magnet pull force

Field Strength

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HH 42x8.8 [M6] / N38 - through hole magnetic holder

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

SM 32x225 [2xM8] / N42 - magnetic separator

UMH 60x15x69 [M8] / N38 - magnetic holder with hook

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Disadvantages

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

Lifting capacity in practice – influencing factors

Safe handling of NdFeB magnets

Nickel coating and allergies

Bone fractures

Permanent damage

Dust is flammable

Fragile material

Magnetic media

Do not give to children

Do not underestimate power

Keep away from electronics

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.