GO Ring gauges, 7-piece set in sturdy plastic case M 3 - M 12

• for GO inspection of external metric threads across the stated set range
• for checking bolts, studs, threaded shafts, or machined external threads
• for quality control where a ring gauge must match the finished external thread
• for organized storage and size selection in the supplied plastic case

Note Use ring gauges for external threads and choose plug gauges when an internal thread has to be inspected.

• GO ring-gauge grouping supports external-thread inspection across several metric sizes.
• The supplied case helps protect inspection tools from mix-ups and handling damage.
• Ring-gauge format verifies external threads directly on bolts, studs, and machined parts.
• Set logic is practical for recurring workshop and production checks.

• Ring gauges do not inspect internal threads, so use matching plug gauges for tapped holes.

1. Identify the external thread size from the drawing or component marking.
2. Select the matching gauge from the case before starting the inspection.
3. Clean the thread and the gauge contact surfaces.
4. Apply the required GO or NO GO inspection side according to the inspection plan.
5. Do not force the gauge if contamination, burrs, or mismatch are present.
6. Record the result according to your quality or workshop process.
7. Return the gauge to the correct case position after inspection.

• 1 set GO Ring gauges, 7-piece set in sturdy plastic case M 3 - M 12
• 1 piece kunststoff-kassette

• Product type: thread ring gauge set
• Thread system: M
• Thread designation: M 12
• Gauge function: GO
• Gauge target: external threads
• Direction: RH
• Packaging: Kunststoff-Kassette
• Package quantity: 1

When is this ring gauge set useful?

It is useful when GO checks are repeated on several external metric thread sizes in the stated range.

How do you select a ring gauge from the set?

Select the ring gauge by the external thread size and the required inspection side from the quality plan.

Can you use it for tapped holes?

No, ring gauges inspect external threads and tapped holes require plug gauges.

What prevents a wrong inspection result?

Clean the external thread and do not force the ring gauge over burrs, plating build-up, or damage.

What should you verify before buying?

Verify the size range, gauge function, and that the workpieces have external metric threads.

How should the gauges be stored?

Store the gauges in the supplied case so each size remains protected and easy to identify.

Where can you find the thread gauges catalog?

You can find the thread gauges catalog here: VG 23 catalog as PDF