The GAS thread ring gauge GO/NO GO is an inspection instrument used to verify the conformity of external GAS threads. It is intended for applications where inspection must be fast and functional, meaning situations where a numerical thread measurement is not required but an immediate confirmation is needed to determine whether the external thread complies with the required limits.
The inspection is carried out through direct mating with the thread on the component. The GO ring must correctly screw onto the external thread, while the NO GO ring must not proceed beyond the permitted limit. This type of inspection provides an immediate functional judgement and helps speed up inspections, especially whenever many parts must be checked.
GAS threads feature a 55° profile and are widely used on fittings and components intended for hydraulic, pneumatic and fluid systems in general. Since these applications often require correct and technically consistent thread coupling, the GAS thread ring gauge GO/NO GO is particularly useful for rapidly verifying whether the external thread has been machined correctly.
From an operational point of view, GAS thread ring gauges are commonly used for inspecting male fittings, nipples, threaded adaptors, mechanical components and all parts intended for fluid connections. In these situations the instrument helps determine immediately whether the external thread can be accepted and whether the coupling will function correctly.
An important aspect is that the thread ring gauge does not operate as a direct measuring instrument, but as a functional inspection gauge. In practice, it is not intended to “measure” the thread, but to confirm whether the component passes or fails the required functional condition. This makes it particularly useful in serial production, where inspection speed and repeatability between operators are important.
From a manufacturing point of view, the GO/NO GO thread ring gauges are produced in hardened steel, ensuring good wear resistance during repetitive inspections. This makes them suitable for workshops, inspection departments and quality control environments where external thread inspection is carried out continuously.
In addition to standard executions, special GAS thread ring gauges on request can also be supplied, with special diameters, pitches and tolerances depending on the required application. Versions for left-hand threads are also available, covering less common or special design requirements.
In practice, the GAS thread ring gauge GO/NO GO is a practical and reliable solution whenever fast, orderly and repeatable inspection of external threads is required, especially in applications involving fluid connection components with GAS profile threads.
Applications
- Fast inspection of external GAS threads
- Functional inspection of male fittings, nipples and threaded adaptors
- Repetitive inspection on components with external threads
- Inspection of hydraulic and pneumatic system components
- Use in workshops, tooling departments and quality control
- Fast inspections directly in production areas
- Inspection of external threads with 55° profile
- Applications with left-hand threads, special diameters, pitches or tolerances on request
FAQ – GAS thread ring gauge GO/NO GO
What is a GAS thread ring gauge GO/NO GO?
It is an inspection instrument used to verify the conformity of external GAS threads using a GO/NO GO system.
What is a GAS GO/NO GO thread ring gauge used for?
It is used to quickly determine whether an external GAS thread is functionally correct, without requiring a complete numerical inspection.
How is inspection performed with a GAS thread ring gauge?
The GO ring must correctly screw onto the external thread, while the NO GO ring must not proceed beyond the allowed limit. If this condition is achieved, the thread complies with the required limits.
What is the characteristic of GAS threads?
GAS threads feature a 55° profile and are frequently used on fittings and components intended for fluid systems.
When is it useful to use a GAS thread ring gauge?
It is useful during production inspections, final inspections and whenever many external threads must be checked quickly and repeatably.
What does this instrument inspect in practice?
It verifies the functional conformity of the external thread in terms of diameter, pitch and profile.
Does the GAS thread ring gauge provide a numerical thread measurement?
No, it is not intended to provide a numerical value, but to confirm in a practical way whether the thread is conforming or not.
On which components is it mainly used?
It is mainly used on fittings, nipples, threaded adaptors and other components with external GAS threads.
Are special executions available?
Yes, special GAS thread ring 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 ring 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 verify external GAS threads quickly and reliably.
What are the most common mistakes when using a GAS thread ring gauge?
The most common mistakes are using the gauge on dirty or burred threads, forcing the NO GO ring and using a ring gauge with characteristics not corresponding to the thread being inspected.
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