Female screw component and fastening component utilizing the same
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United States of America Patent
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Apr 14, 2015
Grant Date -
Dec 29, 2011
app pub date -
Mar 15, 2010
filing date -
Mar 16, 2009
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A female thread member capable of preventing seizing caused by inclined insertion, and being smoothly fastened from any directions in which a bolt is inserted, and a fastening member using the female thread member. A non-thread portion is formed on an inner peripheral surface of a female thread member body having a female thread for a length corresponding to at least one pitch from an end surface on a bolt-inserting side, and a projection which comes into contact with a flank surface of a male thread of an inserted bolt is formed on a line extending from a helical line of the female thread. The female thread member is used in combination with the bolt having no incomplete thread portion, and there is no adverse possibility of seizing regardless of any directions in which the bolt is inserted.
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