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

Product available Ships today (order by 14:00)

UMP 75x25 [M10x3] GW F200 GOLD / 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: 1-6500
Rating: 5

search holder

Catalog no 210421

GTIN/EAN: 5906301814061

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

900 g

Load capacity

310.00 kg / 3040.06 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 8 000 Gauss [±5%]

150.00 ZŁ with VAT / pcs + price for transport

121.95 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

121.95 ZŁ

150.00 ZŁ

price from 10 pcs

114.63 ZŁ

141.00 ZŁ

price from 25 pcs

107.32 ZŁ

132.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Looking for a better price?

Call us now +48 888 99 98 98 alternatively contact us via our online form the contact page.
Parameters as well as form of neodymium magnets can be checked with our our magnetic calculator.

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

💡 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!

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

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

properties

properties	values
Cat. no.	210421
GTIN/EAN	5906301814061
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	900 g
Load capacity ~ ?	310.00 kg / 3040.06 N
Coating	[NiCuNi] Nickel
Series	GOLD
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 8 000 Gauss [±5%]
Size/Mount Quantity	3xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD / 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

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%

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: 210421-2025

Magnet Unit Converter

Magnet pull force

Force in kg

Newtons (N)

Force in lbs

Magnetic Field

Tesla (T)

Type your figure in one of the inputs, to see the rest change in real-time.

UMC 16x5/2x5 / N38 - cylindrical magnetic holder

3.33 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

BM 450x180x70 [4x M8] - magnetic beam

4734.89 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 32x350 [2xM8] / N52 - magnetic separator

1119.30 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 7x2 / N38 - cylindrical magnet

0.381 ZŁ brutto / pcs

The best choice are magnets in thick, chrome-plated housings dedicated to water applications. Model UMP 75x25 [M10x3] GW F200 GOLD / N42 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

The double-sided model attracts from above and below, increasing the chance of hooking a find. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

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). Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

Most of our starter kits are complete and ready to use. In the package, you will find everything needed: strong rope (e.g., 20m), gloves, and hardware. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. 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 selecting the Dhit brand, you get a higher quality standard and real N52 grade for the average cost.

As a result, despite the affordable cost, the mechanical durability of the GOLD mount puts it a step above the competition.

You should know that the identical mount used by the side hook can actually show only 40 kg of strength instead of the promised 200 kg. Interestingly, in the entire internet, it is hard to find recordings testing the real side-pull force of competitor products on the lateral attachment.

{By choosing GOLD mounts, you bet on a local market leader that knows the specifics of our waters. Every product is checked before delivery, which guarantees that you the set will be of the highest quality.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Apart from their superior holding force, neodymium magnets have these key benefits:

They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (in testing),
Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by magnetic disturbances,
By covering with a shiny layer of nickel, the element presents an nice look,
Magnetic induction on the top side of the magnet is maximum,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to the option of free forming and adaptation to individualized needs, neodymium magnets can be modeled in a wide range of shapes and sizes, which makes them more universal,
Versatile presence in future technologies – they are used in mass storage devices, electromotive mechanisms, diagnostic systems, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in small systems

Disadvantages

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 very resistant to heat
They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Limited possibility of producing threads in the magnet and complex shapes - preferred is cover - magnetic holder.
Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, small elements 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

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

The load parameter shown represents the peak performance, measured under ideal test conditions, meaning:

using a plate made of mild steel, acting as a circuit closing element
whose transverse dimension reaches at least 10 mm
with an ground contact surface
without the slightest air gap between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at temperature room level

Lifting capacity in practice – influencing factors

Real force is influenced by specific conditions, such as (from priority):

Clearance – existence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Load vector – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Material composition – not every steel attracts identically. High carbon content worsen the attraction effect.
Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Serious injuries

Big blocks can break fingers instantly. Do not put your hand between two attracting surfaces.

Do not overheat magnets

Do not overheat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

This is not a toy

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Store away from kids and pets.

Eye protection

Beware of splinters. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Pacemakers

People with a pacemaker must maintain an safe separation from magnets. The magnetic field can stop the operation of the life-saving device.

Electronic devices

Device Safety: Strong magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Precision electronics

An intense magnetic field disrupts the functioning of compasses in smartphones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.

Sensitization to coating

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from direct skin contact or select coated magnets.

Powerful field

Use magnets with awareness. Their immense force can shock even experienced users. Plan your moves and respect their force.

Flammability

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

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

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

Looking for a better price?

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

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Environmental data

Magnet pull force

Magnetic Field

See also offers

UMC 16x5/2x5 / N38 - cylindrical magnetic holder

BM 450x180x70 [4x M8] - magnetic beam

SM 32x350 [2xM8] / N52 - magnetic separator

MW 7x2 / N38 - cylindrical magnet

Advantages as well as disadvantages of neodymium magnets.

Strengths

Disadvantages

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Lifting capacity in practice – influencing factors

Serious injuries

Do not overheat magnets

This is not a toy

Eye protection

Pacemakers

Electronic devices

Precision electronics

Sensitization to coating

Powerful field

Flammability

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C