Specification for Rotary Drill Stem Elements (First Edition; Effective September 2006; Incorporates Addendum 1: March 2007@ Addendum 2: August 2009; Addendum 3: April 2011)
This part of ISO 10424 specifies requirements for the following drill stem elements: upper and lower kelly valves; square and hexagonal kellys; drill stem subs; standard steel and non-magnetic drill collars; drilling and coring bits. This part of 10424 is not applicable to drill pipe and tool joints@ rotary shouldered connection designs@ thread gauging practice@ or grand master@ reference master and working gauges. NOTE 1 For the purposes of the provision in footnote a@ API Specs 8A and 8C are equivalent to ISO 13535. NOTE 2 For the purposes of the provision in footnote b@ API Specs 5D and 7 are equivalent to ISO 11961. NOTE 3 All connections between lower kelly upset and the bit are RH. NOTE 4 All connections between upper kelly upset and swivel are LH.