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A comment on Self-tightening nut that provides tight fastening with a unique screw thread. Parent comment

Re:Self-tightening nut that provides tight fastening with a ... by tjradcliffe on Monday November 10, 2014 @12:06PM (#8584704)
I agree it's a little specialized and likely quite pricy, but as a sometime roboticist this kind of innovation makes me hopeful. Fasteners and connectors are unsolved problems, and robotics is plagued with such issues. Even an expensive solution for a few critical points would be valuable. Loc-tite works OK most of the time, but the ideal is a nut that actually stays tight all by itself.
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Re:Self-tightening nut that provides tight fastening with a ... by kcorbitt on Monday November 10, 2014 @01:24PM (#8585243)
A sincere question from another part-time (hobbyist) roboticist: what problems do you have with loosening that nylock[1] nuts don't solve?

[1] https://www.google.com/search?q=nylock+nut&espv=2&source=lnm...

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Re:Self-tightening nut that provides tight fastening with a ... by bradfa on Monday November 10, 2014 @01:35PM (#8585316)
Likely high temperatures and/or chemical resistance, maybe very high tightening torques or force, but possibly others, too. Mostly more specialized fastening, I would guess.

But think about the bolts and nuts that hold the exhaust system to a car engine. Temperatures are going to be very high and nylon wouldn't withstand those temperatures. Things like that.

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Re:Self-tightening nut that provides tight fastening with a ... by mhb on Monday November 10, 2014 @01:55PM (#8585466)
Lock washers?
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Re:Self-tightening nut that provides tight fastening with a ... by swimfar on Monday November 10, 2014 @05:56PM (#8587178)
According to a NASA fastener design manual[1](page 9) split-ring style lock washers are useless for locking purposes. They say that star washers do proved some additional friction/locking action, but at the cost of damage to the surface(the friction comes from digging into the surface).

[1] http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/1990000...

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Re:Self-tightening nut that provides tight fastening with a ... by mhb on Monday November 10, 2014 @06:20PM (#8587298)
Thanks. That's great to know. And lots of other useful information.
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Re:Self-tightening nut that provides tight fastening with a ... by WildUtah on Monday November 10, 2014 @03:43PM (#8586240)
Fretting. Under high lateral force and vibration, I get fretting and I hate it.
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Re:Self-tightening nut that provides tight fastening with a ... by stock_toaster on Monday November 10, 2014 @02:08PM (#8585535)
I imagine aerospace may be an interesting application as well. Pretty darn hard to just "go tighten it" when it is on its way to mars!
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Re:Self-tightening nut that provides tight fastening with a ... by craigwblake on Monday November 10, 2014 @04:19PM (#8586526)
I know you're probably joking but there are time-tested solutions to that problem.

e.g. http://en.wikipedia.org/wiki/Safety_wire

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