M14x1,5 Thread
Produkty z kategorii
M14x1,5 Thread – characteristics and application
The M14x1,5 thread is a popular metric fine thread with an external diameter of 14 mm and a thread pitch of 1,5 mm. It belongs to the group of precision threads used in systems where high connection tightness and resistance to vibration and variable pressures are required. In hydraulic power, it is commonly used in connectors, hose ends, valves, and connecting elements that must ensure a safe and tight connection between high-pressure lines.
Characteristic features of the M14x1,5 thread
This thread is available in both external and internal versions, depending on the type of connector. In the Hydron thread identification table, it corresponds to the measurement range:
-
external thread: 13,6–13,9 mm
-
internal thread: 12,2–12,6 mm It was developed in accordance with the ISO standard – a metric thread with a 1,5 mm pitch. Its design allows for secure tightening and connection tightness even under high-pressure conditions.
Application of the M14x1,5 thread
M14x1,5 threads are used in:
-
hydraulic and pneumatic systems,
-
hose ends and ferrules for hose crimping,
-
technical plugs and caps,
-
machine components, engines, and industrial equipment.
In Hydron hydraulic power, the M14x1,5 thread can be found, among others, in DKOL and DKOS metric fittings, which are used for steel-braided hoses. It also occurs in couplings, AA female tees, female elbows, and differential bushes, i.e., in the group of elements with internal threads.
Why choose M14x1,5 thread products at the Hydron store?
Hydron, as a company with nearly 20 years of experience in hydraulic power, offers a full range of components with M14x1,5 threads – from fittings and couplings to connectors and reductions. All products meet rigorous quality standards and are compatible with equipment from renowned manufacturers. Customers receive professional advice and the possibility of matching components to a specific hydraulic system.
Technical parameters of the M14x1,5 thread:
-
Thread type: metric fine (M)
-
External diameter: 14 mm
-
Thread pitch: 1,5 mm
-
Measurement range (external): 13,6–13,9 mm
-
Measurement range (internal): 12,2–12,6 mm
-
Standard: ISO metric
M14x1,5 thread in hydraulics - dimensions, measurement, and application
The M14x1,5 thread is a metric thread with a nominal diameter of 14 mm and a pitch of 1,5 mm, often found in hydraulic power. It occurs in straight connectors, elbows, tees, fittings, adapters, and other elements of hydraulic installations.
In the DIN 2353 system, the M14x1,5 thread can appear, among others, in the 8L and 6S sizes. This is very important because an identical thread does not automatically mean component compatibility. When selecting, you must also check the series, pipe diameter, and connection geometry.
Most important dimensions of the M14x1,5 thread
- thread type: metric,
- designation: M14x1,5,
- nominal diameter: 14 mm,
- thread pitch: 1,5 mm,
- practical external thread measurement: 13,6-13,9 mm,
- practical internal thread measurement: 12,2-12,6 mm,
- typical DIN 2353 sizes: 8L or 6S,
- typical pipe diameters: 8 mm in L series or 6 mm in S series,
- DIN 2353 system geometry: 24° cone.
What does the M14x1,5 designation mean?
The letter M stands for metric thread. The number 14 defines the nominal diameter of the thread in millimeters, while the value 1,5 denotes the thread pitch.
After making one full turn, the mating elements move axially by 1,5 mm. Therefore, when identifying a thread, both its diameter and pitch must be confirmed.
How to measure the M14x1,5 thread?
- Clean the thread from dirt and seal residue.
- Measure the largest diameter of the external thread with a caliper.
- A value of approximately 13,6-13,9 mm indicates a nominal size of M14.
- Check the pitch using a thread gauge.
- For M14x1,5, the pitch is 1,5 mm.
- Finally, check the connector series and the sealing method.
How to check the 1,5 mm pitch without a gauge?
If you do not have a thread gauge, you can measure a larger number of threads. Ten pitches of the M14x1,5 thread correspond to a distance of approximately 15 mm.
Such a measurement is much more reliable than trying to measure a single gap between threads.
M14x1,5 in the DIN 2353 system
In hydraulic power, the M14x1,5 thread occurs in the system of metric DIN 2353 connectors with a 24° cone. In this system, the thread itself does not yet determine the pipe size or connector series.
M14x1,5 can be associated with the light 8L series or the heavy 6S series. This means that two components with the same thread may be intended for different pipe diameters and cannot be treated as interchangeable.
M14x1,5 8L vs M14x1,5 6S
| Variant | Series | Pipe | Thread |
|---|---|---|---|
| 8L | light L | 8 mm | M14x1,5 |
| 6S | heavy S | 6 mm | M14x1,5 |
This is one of the most important examples showing why in hydraulics parts should not be selected solely by the thread diameter.
External and internal M14x1,5 thread
For an external M14x1,5 thread, the practical caliper measurement is approximately 13,6-13,9 mm. For an internal thread, a typical measurement is approximately 12,2-12,6 mm.
The difference results from the measurement location. Therefore, before comparing values, it must first be determined whether the component being examined has an external or internal thread.
Does M14x1,5 seal the connection on its own?
No. The M14x1,5 thread itself is primarily responsible for screwing and compression. In many hydraulic connectors, the proper sealing takes place on a separate surface.
It can be a 24° cone, an O-ring, a sealing washer, a face surface, or other geometry provided by the manufacturer.
What components can have an M14x1,5 thread?
- straight connectors,
- hydraulic elbows,
- tees,
- bulkhead connectors,
- fittings,
- adapters,
- couplings and nuts,
- reductions.
How to choose the correct M14x1,5 connector?
- confirm the M14 thread diameter,
- check the 1,5 mm pitch,
- determine external or internal thread,
- check the L or S series,
- confirm the 8L or 6S size,
- verify the 8 mm or 6 mm pipe diameter,
- check the cone geometry and sealing method,
- confirm the required operating pressure.
Most common mistakes when selecting M14x1,5
- selecting parts solely by the diameter of approximately 14 mm,
- failing to check the 1,5 mm pitch,
- confusing 8L with 6S,
- assuming that an identical thread means full interchangeability,
- ignoring the 24° cone,
- connecting elements with different sealing methods,
- selecting a connector without checking the operating pressure.
Metric threads and hydraulic fittings at HYDRON
If you identify a different size, check other metric thread sizes.
After determining the thread, you can select the appropriate construction in the category HYDRON hydraulic fittings.
FAQ - M14x1,5 thread
What diameter does the M14x1,5 thread have?
The nominal diameter is 14 mm. The practical measurement of the external thread is approximately 13,6-13,9 mm.
What pitch does the M14x1,5 thread have?
The thread pitch is 1,5 mm.
Which DIN 2353 size corresponds to M14x1,5?
The M14x1,5 thread can occur, among others, as 8L for an 8 mm pipe or 6S for a 6 mm pipe.
Are 8L and 6S interchangeable?
No. Despite the identical M14x1,5 thread, they concern different series and different pipe diameters.
Will every M14x1,5 component fit each other?
No. You must additionally check the connector series, pipe diameter, cone geometry, sealing method, and operating pressure.