When an GEC is inclosed in a metal raceway, standard locknuts, etc. are not considered 'continuous' unless items are bonded together.
See examples in figures 7-13 and 7-14 of the 8th Edition of the Soares Book on Grounding.
In figure 7-14, I believe, a 'setscrew locknut' would serve the purpose of the bonding bushing in the panelboard/conduit connection and also for the conduit to enclosures of figure 7-13.
