Even among BNC-like bayonet connectors, there are at least three Twinax designs (IBM, "TRB" concentric with varying lug counts, and a polarized shape with one male & one female on each end). See drawings at "Twinax Connectors - RF Connectors | Amphenol RF". www.amphenolrf.com.
anzacom.com
Twinax Cable Information, Anzac Computer Equipment Corporation, 2004-07-22, archived from the original on March 4, 2011, retrieved 2009-01-30
