The GAS thread plug gauge GO/NO GO is one of the most commonly used instruments whenever inspection of a GAS internal thread must be fast, repeatable and easy to interpret. It does not provide a numerical thread measurement, but instead gives an immediate indication of thread conformity, simplifying inspection operations during production and final quality control.
The inspection principle is based on direct mating with the thread to be verified. The GO side must correctly engage with the internal thread, while the NO GO side must not continue beyond the allowed limit. In this way the instrument does not “measure” the thread in the traditional sense, but confirms whether the thread can be considered functionally correct.
GAS threads are characterised by a 55° profile and are frequently used on fittings and components intended for hydraulic, pneumatic and fluid systems in general. Since these threads are often used in technical applications where correct coupling is essential, the GAS thread plug gauge GO/NO GO is particularly useful for quickly verifying whether the internal thread has been machined correctly.
From an operational point of view, this type of GAS thread plug gauge is intended whenever many parts must be inspected in a short time, for example during production inspections, after thread machining or in final assembly inspections. The main advantage is that the operator immediately obtains a clear inspection result without needing to perform a more complex numerical measurement every time, making the inspection faster and more uniform from one component to another.
This type of instrument is widely used on valve bodies, fittings, threaded hydraulic components, pneumatic system parts and in general on all mechanical components with internal GAS threads requiring reliable functional inspection. It is therefore particularly suitable for workshops, production departments and inspection areas where practical and technically consistent inspection is required.
From a manufacturing point of view, the thread plug gauge is produced in hardened steel, a useful characteristic for ensuring good wear resistance during repetitive inspections. This aspect is important whenever the instrument is used continuously on production batches or in workstations where internal thread inspection is part of the normal workflow.
In addition to standard executions, special GAS thread plug gauges on request can also be supplied, with special diameters, pitches and tolerances according to the application requirements. Versions for left-hand threads are also available, covering less common requirements and special design applications.
In practice, the GAS thread plug gauge GO/NO GO is a very useful functional inspection instrument whenever internal GAS threads must be checked quickly, consistently and with reliable technical results, especially in applications where inspection speed is important but repeatability must remain high.
Applications
- Fast inspection of GAS internal threads
- Functional inspection of fittings and threaded fluid components
- Repetitive inspection on components with internal threads
- Inspection of hydraulic and pneumatic system components
- Use in workshops, tooling departments and quality control
- Fast production inspections directly in the workshop
- Inspection of internal threads with 55° profile
- Applications with left-hand threads, special diameters, pitches or tolerances on request
FAQ – GAS thread plug gauge GO/NO GO
What is a GAS thread plug gauge GO/NO GO?
It is an inspection instrument used to verify the conformity of GAS internal threads using a GO/NO GO system.
What is a GAS GO/NO GO thread plug gauge used for?
It is used to quickly determine whether a GAS internal thread is functionally correct, without carrying out a complete numerical inspection.
How does a GAS thread plug gauge work?
The GO side must screw correctly into the internal thread, while the NO GO side must not give a conforming result. If this condition is achieved, the thread complies with the required limits.
What characteristic do GAS threads have?
GAS threads have a 55° profile and are frequently used on fittings and components for hydraulic or pneumatic systems.
When is this type of inspection useful?
It is useful whenever many parts must be checked quickly, for example during production inspections, after thread machining or in final assembly inspections.
What does this instrument inspect in practice?
It verifies the functional conformity of the internal thread in terms of diameter, pitch and profile.
Does the GAS thread plug gauge provide a numerical thread measurement?
No, it is not intended to provide a numerical value, but to practically determine whether the thread is conforming or not.
On which components is it mainly used?
It is mainly used on fittings, valve bodies, hydraulic or pneumatic system components and on mechanical parts with internal GAS threads.
Are special executions available?
Yes, special GAS thread plug gauges for non-standard applications can also be manufactured on request.
Can special diameters and pitches be supplied?
Yes, versions with special diameters and pitches can be supplied according to the required application.
Can special tolerances be supplied?
Yes, executions with special tolerances can also be manufactured on request.
Are left-hand thread versions available?
Yes, versions for left-hand threads are also available.
What material is the GAS thread plug gauge made from?
It is manufactured in hardened steel to provide good wear resistance during repetitive inspections.
Who is this instrument intended for?
It is intended for workshops, tooling departments, inspection and quality control environments that need to inspect internal GAS threads in a fast and reliable way.
What are the most common mistakes when using a GAS thread plug gauge?
The most common mistakes are using the gauge on dirty or burred threads, forcing the NO GO side and using a gauge with characteristics not corresponding to the thread being inspected.
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