INSIZE Thread Plug Gauge Set 4130-S7 Go/No-Go M3–M12

INSIZE Thread Plug Gauge Set 4130-S7 Go/No-Go M3–M12 is a compact inspection kit intended for checking internal metric threads in a workshop or quality-control environment. The set covers common thread sizes from M3 up to M12 and includes both Go and No-Go gauges to perform simple pass/fail verification of threaded holes. It supports routine inspection tasks during production, assembly and incoming part control where quick and reliable confirmation of basic thread conformity is required.

Advantages

The Go/No-Go design enables rapid and repeatable checks without the need for measurement interpretation: a Go gauge should enter the hole freely while a No-Go gauge must not fully engage if the thread is within tolerance. The set is robust and portable for use on the shop floor or in maintenance departments. Manufactured to the brand's quality standards, the gauges offer consistent feel and wear resistance for repeated inspection cycles.

Suitable for

• Incoming inspection of threaded components
• Production-line quality control and process checks
• Maintenance and repair tasks requiring fast thread verification
• Assembly stations where quick pass/fail checks are needed

Key specifications

• Thread range: metric internal threads from M3 to M12
• Gauge type: Go and No-Go plug gauges for each nominal size
• Intended use: Go/No-Go pass-fail inspection of threaded holes
• Construction: hardened inspection gauges designed for repeated use
• Application environment: workshop, production line, maintenance and incoming inspection

How to use

Select the gauge matching the nominal thread size to be inspected. First, try the Go plug gauge: it should enter the threaded hole and screw in to the designated depth without excessive force. Then try the No-Go plug gauge: it should not fully engage if the thread is within tolerance. Record results according to your inspection procedure and replace or recalibrate gauges if excessive wear is detected. Follow standard handling practices to avoid dropping or damaging the gauges.

Usage recommendations

Store gauges in a clean, dry case when not in use to prevent corrosion and mechanical damage. Periodically inspect gauge condition and compare against a calibrated reference to ensure continued accuracy. Use appropriate torque and avoid forcing gauges into damaged threads to prevent false readings and preserve gauge life.