ACME & Stub ACME — detail
Gauge family 06 / 11

ACME & Stub ACME gauges, manufactured in Pune.

ASME B1.5ANSI B1.8ACME 29° · ASME B1.5 / Stub ACME · ANSI B1.8

ACME power thread gauges to ASME B1.5 and Stub ACME to ANSI B1.8. 2G is the common class; 3G and 4G are available where less backlash is required.

ACME thread height
0.5p
Stub ACME height
0.3p
Representative sizes & classes
TypeStandardClasses
ACMEASME B1.52G · 3G · 4G
Stub ACMEANSI B1.82G · 3G · 4G

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 ACME & Stub ACME

What is a acme & stub acme?

ACME & Stub ACME gauges, 2G standard with 3G / 4G for reduced backlash.

Which standard does it follow?

Manufactured to ASME B1.5, ANSI B1.8.

What range is available?

Available ranges: ACME thread height 0.5p; Stub ACME height 0.3p.

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.

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Need acme & stub acme?

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.