robertst
|
 posted on 28/3/06 at 11:57 AM |
|
|
rivnuts?
sorry if this is repetitive in any way...
but just what the hell is a rivnut and how does it work? is "rivnut" its real name or is it just diy jargon?
i can deduce by the name that they are rivets which have nuts to bolt them down? are rivnuts removable and reusable? where should i use a rivnut
instead of a rivet?
thanks!
Tom
|
|
|
|
|
Hellfire
|
| posted on 28/3/06 at 12:03 PM |
|
|
A rivnut is basically a captive thread which is secured in much the same way as a rivet. You drill a hole, insert the rivnut and use a rivnut tool to
compress it which holds it in place. Like they say, a picture paints a thousand words so I'll go and look for one............
|
|
|
ned
|
| posted on 28/3/06 at 12:04 PM |
|
|
and look at:
http://www.zygology.com/images/others/7486.pdf
[Edited on 28/3/06 by ned]
beware, I've got yellow skin
|
|
|
smart51
|
| posted on 28/3/06 at 12:06 PM |
|
|
A rivnut is a sort of cross between a rivet and a nut. I guess there is a trade name for them but I don't care what.
Rivnuts are sort of top hat shaped. The cylinder bit goes in a hole that you have drilled and the flanged rim stops it falling all the way through.
The other end of the cylinder from the flange is threaded. A special tool screws into these threads and pulls them toward the flanged rim. the metal
buckes and clamps the part with the hole like a rivet. You then unscrew the tool and you have a threaded crimped insert that you can bolt things to.
It is in effect a nut that you can rivet to a thin sheet - a rivnut.
They sometimes come a bit loose making it difficult to unscrew the bolt but a bit of glue can solve this.
|
|
|
Hellfire
|
| posted on 28/3/06 at 12:07 PM |
|
|
Have a look on 20th November. Shows you how they work.
Rivnuts
|
|
|
ned
|
| posted on 28/3/06 at 12:08 PM |
|
|
see here for an animation:
http:
//www.zygology.com/products/how_work.asp?working_diagram_link=http://www.avdel.textron.com/products/images/39006.swf&submit=Search
and yet more info:
http://www.zygology.com/products/tier3.asp?search_ID=Steel%20Nutserts
[Edited on 28/3/06 by ned]
beware, I've got yellow skin
|
|
|
piddy
|
| posted on 28/3/06 at 01:06 PM |
|
|
Engineers where I work call them Clinch nuts.
|
|
|
robertst
|
| posted on 28/3/06 at 01:22 PM |
|
|
so for example, if i were to want to bolt the nose cone to the chassis, i cant use a normal bolt, but a rivnut will be better? so just drilling a
hole in the chassis and screwing in a bolt will not do the job?
thanks for the info!
Tom
|
|
|
robertst
|
| posted on 28/3/06 at 01:28 PM |
|
|
quote:
Originally posted by ned
see here for an animation:
http:
//www.zygology.com/products/how_work.asp?working_diagram_link=http://www.avdel.textron.com/products/images/39006.swf&submit=Search
and yet more info:
http://www.zygology.com/products/tier3.asp?search_ID=Steel%20Nutserts
[Edited on 28/3/06 by ned]
OHHHH how cool are rivnuts??? now i get it! the animation answered my previous question... a picture might paint a thousand words but an animation
paints a billion! wow, im gonna use them like mad!
i guess the real name for them is nutserts?
Tom
|
|
|
ned
|
| posted on 28/3/06 at 01:32 PM |
|
|
yup, nutserts is another alias, whichever way you look at it i suppose..
Ned.
beware, I've got yellow skin
|
|
|
piddy
|
| posted on 28/3/06 at 02:53 PM |
|
|
quote:
so just drilling a hole in the chassis and screwing in a bolt will not do the job?
Sometimes the metal you want to attach to isn't thick enough to drill and tap. This is where the rivnut come in really useful.
|
|
|
DIY Si
|
| posted on 28/3/06 at 03:54 PM |
|
|
Personally, I'd use dezeus fasteners to attach a nose cone. Nice flush fitting things. Doing it with a bolt could mean you need loads of extra
ugly bolt covers where you least want them.
|
|
|
Hellfire
|
| posted on 28/3/06 at 04:13 PM |
|
|
quote:
Originally posted by piddy
Engineers where I work call them Clinch nuts.
Sounds like a nasty torture method.. 
|
|
|
