Table of Contents

1 Scope
2 Normative References
3 Terms, Definitions, and Abbreviations
4 Thread Dimensions and Tolerances-Line Pipe, Round
  Thread Casing and Tubing, and Buttress Thread Casing
5 Thread Inspection
6 Diameter, Ovality, and Size Gauging Practice
7 Gauge Specification
8 API Gauge Certification
9 Thread Marking
Annex A (informative) - API Monogram Program, Use
        of the API Monogram by Licensees
Annex B (informative) - Supplementary Requirements
Annex C (informative) - Instructions for Shipment of
        Master Gauges
Bibliography

Abstract

Describes dimensions, tolerances, and marking requirements for API threads and the gauges that control the acceptance criteria for the threads.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Petroleum Institute
ProductNote	Chinese & Kazakh translations of 15ED 2008 edition are still available, see API 5B CHINESE & API 5B KAZAKH. Reproducible but contains Colour Pages, Advise dispatch. (SND 12/2017) Also available in Russian translation, see API 5B RUSSIAN. (SND 03/2018) Api monogram program effective date: 01/01/2019. (SND 06/2018) Consulate version now available.
Pages
ISBN
Supersedes	API 5B : 2008(R2015) API 5B : 2008 : R2015
Superseded By	API5B-2018-ERR2-2018-ADD1:2018