... September 5, 2013. Assoc. Editor: James Schmiedeler. 30 08 2012 11 06 2013 We present a novel concept of a threaded fastener that is resistant to loosening under vibration. The anti-loosening feature does not use any additional element and is based on modifying the geometry...

...Sayed A. Nassar; Basil A. Housari This study provides an experimental and theoretical investigation of the effect of hole clearance and thread fit on the self-loosening of tightened threaded fasteners that are subjected to a cyclic transverse service load. An experimental procedure and test setup...

... and/or prevent joint leakage ( 1 2 3 4 ). Examples of such critical applications include many automotive power-train joints as well as many flanged connections in power plants (in particular nuclear power plants). The yield control process of threaded fastener tightening eliminates the objectionable level...