The International Electrotechnical Commission has released a new edition of the IEC 61076-2-104 standard. IEC 61072-2-104 applies to “Connectors for electronic equipment – Product requirements – Part 2-104: Circular connectors – Detail specification for circular connectors with M8 screw-locking or snap-locking.” The new edition is available for purchase on the IEC website.
“IEC 61076-2-104:2014 describes circular connectors M8 screw-locking or with nominal diameter 8 mm snap-locking, typically used for industrial process measurement and control. These connectors consist of fixed and free connectors either rewireable or non-rewireable. Male connectors have round contacts of diameter 0,6 mm, diameter 0,7 mm and diameter 1,0 mm.”
*Description from IEC website