← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

HH 16x5.3 [M3] / N38 - through hole magnetic holder

through hole magnetic holder

Catalog no 370480

GTIN/EAN: 5906301814900

5.00
Load capacity 4.00 kg / 39.23 N
Diameter Ø
16 mm [±1 mm]
Height
5.3 mm [±1 mm]
Weight
6.4 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see technical data »

2.70 zł net / pcs

3.32 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
2.70 zł
3.32 zł
price from 250 pcs
2.54 zł
3.12 zł
price from 600 pcs
2.38 zł
2.92 zł

Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

Product card - HH 16x5.3 [M3] / N38 - through hole magnetic holder

Specification / characteristics - HH 16x5.3 [M3] / N38 - through hole magnetic holder

properties
properties values
Cat. no. 370480
GTIN/EAN 5906301814900
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 5.3 mm [±1 mm]
Weight 6.4 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.00 kg / 39.23 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics HH 16x5.3 [M3] / N38 - through hole magnetic holder
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 310 °C
Curie Temperature TF 590 °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: 370480-2026
Magnet Unit Converter

Pulling force

Magnetic Induction

Just complete a single box, to let the converter calculate the rest instantly.

Other proposals

MW 8x10 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 8x10 / N38 - cylindrical magnet

1.501 zł brutto / pcs
UMS 25x10.5x5.5x8 / N38 - conical magnetic holder
Product available Ships today (order by 14:00)

UMS 25x10.5x5.5x8 / N38 - conical magnetic holder

9.72 zł brutto / pcs
MW 70x40 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 70x40 / N38 - cylindrical magnet

395.40 zł brutto / pcs
UI 40x12x7 [CA] - badge holder
Product available Ships today (order by 14:00)

UI 40x12x7 [CA] - badge holder

0.984 zł brutto / pcs
This construction allows solid screwing of the magnet to the substrate using a bolt or rivet. The steel housing strengthens attraction force and protects the magnet from cracking.
We recommend manual tightening with feeling to not crush the magnetic ring. It is worth using a washer if the screw head is small to distribute pressure.
Thanks to this, the through-hole holder has much greater lifting capacity than the magnet alone of these dimensions. This force is available with direct contact with metal.
They are commonly used in carpentry as strong furniture latches. Great as mounting points in advertising and exhibition.
This protection shields against moisture in indoor conditions but is not 100% waterproof. This is not a stainless product (unless stated otherwise).

Pros and cons of Nd2Fe14B magnets.

Benefits

Apart from their consistent power, neodymium magnets have these key benefits:
  • They do not lose magnetism, even after nearly ten years – the reduction in lifting capacity is only ~1% (theoretically),
  • Neodymium magnets are distinguished by highly resistant to magnetic field loss caused by external field sources,
  • Thanks to the shimmering finish, the coating of nickel, gold-plated, or silver gives an clean appearance,
  • Magnetic induction on the top side of the magnet is impressive,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
  • Possibility of accurate creating as well as optimizing to specific applications,
  • Key role in future technologies – they find application in HDD drives, electric motors, precision medical tools, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in small systems

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease 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 stability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We suggest casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Potential hazard related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these magnets 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

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

Magnet power was determined for ideal contact conditions, assuming:
  • on a plate made of structural steel, effectively closing the magnetic field
  • with a cross-section no less than 10 mm
  • with an ideally smooth touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • in temp. approx. 20°C

Determinants of lifting force in real conditions

Effective lifting capacity is affected by specific conditions, mainly (from priority):
  • Distance (between the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Angle of force application – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick plate causes magnetic saturation, causing part of the power to be wasted into the air.
  • Steel type – mild steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of NdFeB magnets
Adults only

Neodymium magnets are not toys. Swallowing multiple magnets can lead to them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.

Serious injuries

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

Conscious usage

Handle with care. Neodymium magnets attract from a distance and connect with massive power, often faster than you can react.

Mechanical processing

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Magnetic interference

An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Maximum temperature

Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Metal Allergy

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

ICD Warning

Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Safe distance

Intense magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Protective goggles

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

Caution! Need more info? Read our article: Why are neodymium magnets dangerous?