Description: 411 expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener / 411 expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener/(190) having structure to restrict rotation of threaded, mating pieces (e.g., nut lock) (259) comprising a thread lock (308) involving dissimilarities in the sectional configuration of the threads (309) resulting in the deformation of one thread by the other (310) by integral, interference-producing deviations from a standard thread shape (311) located in the vicinity of the crest or the root of the thread
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