Casing Hangers, Threaded (Mandrel) : A mechanism used to support a casing string in a casing head by means of a male or female thread attached to the casing. (Spec 6A)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}