This part of ISO 10424 specifies requirements on rotary shouldered connections for use in petroleum and natural gas industries@ including dimensional requirements on threads and thread gauges@ stipulations on gauging practice@ 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 part of ISO 10424 is applicable to the following preferred rotary shouldered connection designs: a) number (NC) style; b) regular (REG) style; c) full hole (FH) style. These are traceable to an internationally supported system of gauges and calibration
API SPEC 7-2-2008 Referenced Document
API Spec 7 Specification for Rotary Drill Stem Elements Fortieth Edition
ISO 10424-1 Petroleum and natural gas industries - Rotary drilling equipment - Part 1: Rotary drill stem elements
ISO 11961 Petroleum and natural gas industries — Steel drill pipe — Amendment 1*， 2020-03-09 Update
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]*， 2017-11-01 Update
API SPEC 7-2-2008 history
2017API SPEC 7-2-2017 Specification for Threading and Gauging of Rotary Shouldered Thread Connections (Second Edition; Effective Date: June 6@ 2017)
2008API SPEC 7-2-2008 Specification for Threading and Gauging of Rotary Shouldered Thread Connections (First Edition; Effective December 1@ 2008)