Tapping tool for making vibration resistant prevailing torque fastener
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United States of America Patent
Stats
-
Jan 1, 1980
Grant Date -
N/A
app pub date -
Feb 10, 1978
filing date -
Feb 10, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tapping tool for making a vibration-resistant prevailing torque fastener combination comprising a conventional first element having a standard thread form with first flank angles and a modified second element having a thread form characterized by second steeper flank angles over the entire length thereof, and a truncated root caused by foreshortening of the flanks over a portion of the thread length to produce a helical flat which firmly engages and typically deforms the crest of the first element when threadedly engaged therewith. A difference in flank angles provides longitudinal clearance to receive the deformed material during the threaded engagement.
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Cited Art Landscape
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