probablyleon
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| posted on 10/8/12 at 08:50 AM |
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Captive nuts
I need to bolt an aluminium switch panel to my (carbon mods) dash and would ideally like to be able to remove it easily, so I'd like to use some
kind of captive nut arrangement. I initially though rivnuts would do it but now don'y think they're quite right. Has anyone had any
experience with Jack Nuts? Suggest anything better?
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Daddylonglegs
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| posted on 10/8/12 at 08:59 AM |
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Never heard of Jack nuts so can't comment, but I would have thought rivnuts would be OK as long as you have a suitable washer or similar behind
them?
Just my opinion 
HTH
It looks like the Midget is winning at the moment......
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gavin174
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| posted on 10/8/12 at 09:01 AM |
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never seen them before either..
but a quick search turned up these...
http://www.prifast.co.uk/jacknut.htm
http://www.essexkitcarclub.com
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balidey
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| posted on 10/8/12 at 09:03 AM |
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cage nuts are good, but you need a square hole for the cage bit to go in.
Dutch bears have terrible skin due to their clogged paws
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loggyboy
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| posted on 10/8/12 at 09:23 AM |
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For compostite dash you could use rubber wellnuts.
Anything metal etc would likely cause cracking and come loose over time.
http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313&_nkw=rubber+wellnut&_sacat=0
Mistral Motorsport
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wylliezx9r
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| posted on 10/8/12 at 09:40 AM |
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I used these, managed to get them from work for free. They are excellent, just make sure you order the correct length.
Southco
I spent a lot of money on booze, birds and fast cars. The rest I just squandered.
George Best
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ReMan
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| posted on 10/8/12 at 09:46 AM |
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Yes sounds like a job for "WELL NUTS" 
www.plusnine.co.uk
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cerbera
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| posted on 10/8/12 at 10:03 AM |
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What about 10 x Corner Anchor Nuts # 8-32 UNF 'H3' | eBay
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mcerd1
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| posted on 10/8/12 at 10:26 AM |
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you could just make up a thin metal spreader plate to go behind the dash (enough to stop it cracking the dash)
then you could tack weld or braze the nuts to that and bond it onto the back of the dash
or make the plate out of a little thicker metal (say 3 to 5mm thk aluminium for weight) then tap the holes in it directly....
[Edited on 10/8/2012 by mcerd1]
[Edited on 10/8/2012 by mcerd1]
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renetom
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| posted on 10/8/12 at 11:11 AM |
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no nuts
Hi
We used small blocks of hardwood stuck behind the dash and flange head stainless self tappers
also used to fix dash to scuttle, light and works a treat for anything you need to fix on fibreglass.
If its heavy use nuts & bolts.
René
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Davedew
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| posted on 10/8/12 at 12:22 PM |
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I have used screw anchors from Memfast in grp.
You can install them without the special tool, just takes a bit longer.
http://www.memfast.co.uk/shop/Vprod2.asp?cat=2257001824
[Edited on 10/8/12 by Davedew]
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Mr C
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| posted on 10/8/12 at 02:05 PM |
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quote:
Originally posted by mcerd1
you could just make up a thin metal spreader plate to go behind the dash (enough to stop it cracking the dash)
then you could tack weld or braze the nuts to that and bond it onto the back of the dash
or make the plate out of a little thicker metal (say 3 to 5mm thk aluminium for weight) then tap the holes in it directly...
This is similar to what I did when fixing to grp. I made spreader plates out of aluminium strip and put rivnuts in it. put a minimum of two fixings in
each strip and it wont spin round. If you have access behind then hold the strip in place until you put a couple of bolts in., saves bonding it in
place.
Girl walks into a bar and asks for a double entendre, so the barman gave her one
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twybrow
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| posted on 10/8/12 at 03:20 PM |
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Use Big-Heads they are designed for the job (or make you own as I did). I
use homemade versions to hold my mud guards on, with no problems in 3000 miles. If you email them with a query, they will even send you a load FOC.
You would just drill you holes, and thenuse tigerseal to bond the fastener in place on the backside of the dash. I made my own out of a small offcut
of aluminium, and a rivnut. Just mount the rivnut on the ali, drilla load of holes to allow the adhesive to lock onto the ali, and then abrade,
solvent wipe and bond in place. Simples.
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loggyboy
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| posted on 10/8/12 at 03:46 PM |
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quote:
Originally posted by twybrow
Use Big-Heads they are designed for the job (or make you own as I did). I
use homemade versions to hold my mud guards on, with no problems in 3000 miles. If you email them with a query, they will even send you a load FOC.
You would just drill you holes, and thenuse tigerseal to bond the fastener in place on the backside of the dash. I made my own out of a small offcut
of aluminium, and a rivnut. Just mount the rivnut on the ali, drilla load of holes to allow the adhesive to lock onto the ali, and then abrade,
solvent wipe and bond in place. Simples.
I like them, defo a good idea for wheel arches. Cheers!
Mistral Motorsport
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