self-sustained
self-sustaining
self-switching
self-synchronization
self-synchronizing
self-tapping
self-temperature-compensating
self-tempering
self-test
self-testing
  self-threading
self-timed
self-timer
self-timing
self-transmissible
self-trapping
self-triggering
self-tuning
self-twist
self-twist-twist
self-unloading