Thread Addendum (Shave) Gages

API 5B 5.5.2 Thread Addendum

Per API 5B 5.5.2 Thread addendum “shall be measured on round thread.”

Thread addendum is now a required, mandatory element to be inspected.

Thread Check Inc. offers several Gagemaker models for inspecting thread addendum (a.k.a. shave) gages. Please specify the type of thread when ordering.

Thread addendum (previously refer to as Thread Shave) is the distance from the thread crest to the pitch line. The addendum is a shorter distance than the Thread Height. The thread addendum is usually only measured and controlled on tubing and casing 60° V threads (8 Round,10 Round, and Line Pipe).Measurement of the thread addendum is now a requirement on all round thread per API 5B 5.5.2.

Addendum gages require setting with a particular standard. Standards are sold separately.

Contact point listed in description (e.g. T072) is included, but may specify other.

Thread Check has a team of technical experts that are ready to help you with all your gauging and measurement requirements. Contact us via email at info@threadcheck.com or call us at 800 767 7633

Click here for How to Set and Use Video

SKU Description Connection Indicator Travel Indicator Resolution Min. Bore Included Contact Point* Standard required Each
TA-3012-10 Gagemaker - Internal Addendum Gage- 0-25-0 - T057 10 Round .250" .0005" 0.750" T057 TAS-1014
$669.00
TA-3012-8 Gagemaker - Internal Addendum Gage- 0-25-0 - T072 8 Round .250" .0005" 0.750" T072 TAS-1014
$669.00
TA-3002-M-10 Gagemaker - External Addendum Gage- 0-50-0 - Metric Indicator- T057 10 Round 5 mm .01 mm 2.930" T057 TAS-1014
$297.00
TA-3002-M-8 Gagemaker - External Addendum Gage- 0-50-0 - Metric Indicator- T072 8 Round 5 mm .01 mm 2.930" T072 TAS-1014
$297.00
TA-3002-1-10 Gagemaker - External Addendum Gage- 0-10-0 - .0001" Resolution Indicator- T057 10 Round .500" .0001" 3.730" T057 TAS-1014
$426.00
TA-3002-1-8 Gagemaker - External Addendum Gage- 0-10-0 - .0001" Resolution Indicator- T072 8 Round .500" .0001" 3.730" T072 TAS-1014
$426.00
TA-3002-10 Gagemaker - External Addendum Gage- 0-25-0 - T057 10 Round .250" .0005" 2.930" T057 TAS-1014
$297.00
TA-3002-8 Gagemaker - External Addendum Gage- 0-25-0 - T072 8 Round .250" .0005" 2.930" T072 TAS-1014
$297.00
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