MIL-DTL-5015 of multi-contact circular connectors that were used by virtually every aircraft builder in the United States. Cannon's Type "AN" (Army-Navy) series set the standard for modern circular connectors procured under MIL-C-5015—now MIL-DTL-5015—military specifications. The military specification MIL-DTL-5015 was superseded by SAE-AS50151 in December 2009 pursuant to the general United States Department of Defense goal to reduce the number of military standards in favor of industry technical standards supported by Standards Developing Organizations (SDO) such as the ISO 9000 series for quality assurance and the SAE for technical specifications. MIL-DTL-5015 circular connectors are used primarily for their ease of engagement and
Symbols and conventions used in welding documentation Symbols and conventions used in welding documentation The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 "Welded, brazed and soldered joints -- Symbolic representation on drawings" and ISO 4063 "Welding and allied processes -- Nomenclature of processes and reference numbers". The US standard symbols are outlined by the American National Standards Institute and the American Welding Society and are noted as "ANSI/AWS". Due in part to the growth of the oil industry, this symbol set was used during the 1990s in about 50% of the world's welding operations. An ISO