Adaptable to most fastener types including fluid fittings, borescope plugs, adjustable rod ends and linkages, drain and access plugs, bolts, bleeder valves, electrical connections. Highly reusable - 100 cycles typical. Flexible beam springs or fingers work with mating detent to provide radial and tangential holding forces.
Fastener is free running until prior to seating.
Routine tightening of fastener activates locking feature. External design it totally independent of threads. Absolutely, positively prevents loosening and backoff. Eliminates lockwire, tab washers, deformed threads. Greatly increases fastener robustness against under tightening.