Unified thread gauges — detail
Gauge family 02 / 11

Unified thread plug & ring gauges, manufactured in Pune.

ANSI/ASME B1.2Unified 60° · ANSI / ASME B1.2

Unified inch thread gauges manufactured to ANSI / ASME B1.2 standards, covering UNC, UNF and UN series with GO / NOT-GO plug and ring members.

Thread plugs
No. 0 – 8 inch
Thread rings
No. 0 – 8 inch
Representative sizes & classes
DiameterTPIPlugRing class
No. 0 – UNF80 TPIGO / NOGO2A
1/4 – UNC20 TPIGO / NOGO2A
1/2 – UNC13 TPIGO / NOGO2A
1 – UNC8 TPIGO / NOGO2A

GO gauge

Enters and passes the complete length of the thread, screwed by hand without excessive force.

NOT-GO gauge

May not enter more than two turns from either end, screwed by hand without excessive force.

Ground on our Matrix thread grinders and verified on TRIMOS H4 before every certificate is issued.

Common questions

Questions about Unified thread gauges

What is a unified thread gauges?

UNC / UNF / UN plug and ring gauges to ANSI / ASME B1.2, class 2A and beyond.

Which standard does it follow?

Manufactured to ANSI/ASME B1.2.

What range is available?

Available ranges: Thread plugs No. 0 – 8 inch; Thread rings No. 0 – 8 inch.

How does GO / NOT-GO acceptance work?

The GO member must enter and pass the complete length of the thread by hand, without excessive force. The NOT-GO member may not enter more than two turns from either end.

How do I request a quote?

Share the thread size and standard on our quote page and we will confirm class, availability and pricing within one business day.

Related

Other gauge families

Metric thread gauges“G” pipe gaugesTaper gauges (NPT)
Thread plug gaugesThread ring gaugesGauge manufacturer in IndiaHow a GO / NOT-GO Thread Gauge WorksMetric vs Unified vs Pipe and Taper ThreadsHow to Choose the Right Thread GaugeWhat Traceable Calibration MeansAutomotiveAerospace & defenceGeneral engineering

Need unified thread gauges?

Share your thread, standard or drawing and get the right acceptance class, certified. We supply across India and take enquiries from outside India too, see where we supply.