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API SPEC 7-2
Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition, Includes Errata (2017), Errata 2 (2019), Addendum 1 (2020), Addendum 2 (2023), and Addendum 3 (2025)
Translate name
STANDARD published on 1.1.2017
The information about the standard:
Designation standards: API SPEC 7-2
Publication date standards: 1.1.2017
SKU: NS-1250742
The number of pages: 125
Approximate weight : 406 g (0.90 lbs)
Country: American technical standard
Category: Technical standards API
Annotation of standard text API SPEC 7-2 :
Please note. Addenda and errata may not be included in translated editions of this standard.
This standard specifies the following requirements on rotary shouldered connections for use in petroleum and natural gas industries: dimensional requirements on threads and thread gauges, stipulations on gauging practice and gauge specifications, as well as instruments and methods for inspection of thread connections. These connections are intended primarily for use in drill-string components.
Other supplementary specifications can be agreed between interested parties for special tolerance requirements, qualification, testing, inspection, and finishing. This standard applies both to newly manufactured connections and connections that are recut after service. It should be realized that recut connections are subject to additional inspection and testing--the user is referred to API 7G-2 for such information.
This standard is applicable to the following preferred rotary shouldered connection designs. These are traceable to an internationally supported system of gauges and calibration that can be described as number (NC) style, regular (REG) style, or full-hole (FH) style. See more
These adjuncts apply to this standard:
API SPEC 7-2/Add1
Adjunct of the standard
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Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.3.2020
Selected format: English - electronic (protected pdf) (1.20 USD)
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API SPEC 7-2/Add2
Adjunct of the standard
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Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
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API SPEC 7-2/Add3
Adjunct of the standard
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Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.9.2025
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API SPEC 7-2/Err
Adjunct of the standard
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Errata to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.8.2017
Selected format: English - electronic (protected pdf) (1.20 USD)
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API SPEC 7-2/Err2
Adjunct of the standard
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Errata to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Selected format: English - electronic (protected pdf) (1.20 USD)
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