|
|
Post by Andyberg on Oct 30, 2016 10:47:37 GMT
Didn't really want to start a thread for a simple enough question but hopefully it'll be of help in the future to someone else too👍
Im trying to remember the name of those threaded inserts where you drill a hole into the steel then fix/epoxy in that mean you can then thread bolts into them, basically for retro fitting stuff to you roof?
cheers in advance😉
|
|
|
|
Post by tonyqj on Oct 30, 2016 10:53:49 GMT
Didn't really want to start a thread for a simple enough question but hopefully it'll be of help in the future to someone else too👍 Im trying to remember the name of those threaded inserts where you drill a hole into the steel then fix/epoxy in that mean you can then thread bolts into them, basically for retro fitting stuff to you roof? cheers in advance😉 Cinch Nuts? I have some that can be cinched to plate from about 0.3mm up to a figure that I forget 😳 I used them widely on a kit car. They don't epoxy in, they clamp themselves to the plate. |
|
|
|
Post by JohnV on Oct 30, 2016 11:15:51 GMT
I knew them as Rosan nuts, we used to use them a lot in fairly thin gauge metalwork (electrical chassis) usually in small sizes (up to 0BA) but I never came across sizes for thicker than about 1.5mm plate (mark you .... wasn't looking)
edit .....bloody hell where did the K go ?
|
|
|
|
Post by smileypete on Oct 30, 2016 11:36:39 GMT
|
|
|
|
Post by tonyqj on Oct 30, 2016 11:56:17 GMT
Yeah, they're what I was thinking of. |
|
|
|
Post by tonyqj on Oct 30, 2016 12:00:26 GMT
From that PDF, M4 upwards will fit 4mm plate. |
|
|
|
Post by Stumpy on Oct 30, 2016 12:07:07 GMT
Jo-Bolts used to be used frequently in the aviation industry. Click this link HERE for and idea of what i'm on about.  |
|
|
|
Post by Andyberg on Oct 30, 2016 12:07:40 GMT
Rivnut those are the little beggars......thanks Pete. You're great you are!👍
|
|
|
|
Post by Gone on Oct 30, 2016 12:41:08 GMT
Didn't really want to start a thread for a simple enough question but hopefully it'll be of help in the future to someone else too👍 Im trying to remember the name of those threaded inserts where you drill a hole into the steel then fix/epoxy in that mean you can then thread bolts into them, basically for retro fitting stuff to you roof? cheers in advance😉 Cinch Nuts? I have some that can be cinched to plate from about 0.3mm up to a figure that I forget 😳 I used them widely on a kit car. They don't epoxy in, they clamp themselves to the plate. I put a smear of epoxy around the shank up by the head as I insert and set the rivet nut, it gives a good waterproof seal so when you put the bolt in a bit of polyurethane mastic on the threads and no leaks. |
|
|
|
Post by tonyqj on Oct 30, 2016 12:45:02 GMT
Cinch Nuts? I have some that can be cinched to plate from about 0.3mm up to a figure that I forget 😳 I used them widely on a kit car. They don't epoxy in, they clamp themselves to the plate. I put a smear of epoxy around the shank up by the head as I insert and set the rivet nut, it gives a good waterproof seal so when you put the bolt in a bit of polyurethane mastic on the threads and no leaks. Good advice 😀 |
|
|
|
Post by Gone on Oct 30, 2016 12:53:25 GMT
If you do buy some, don't bother with the cheap setting tools on ebay for anything bigger than about M5 as the tool I got managed 3 fixing before it was scrap. Better to use a high tensile bolt a couple of spanners, a flat bar and 3 hands.
I fitted my 220W solar panels using rivet nuts and they have survived some fairly stormy weather.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 1, 2016 18:11:48 GMT
I've usually drilled and tapped a thread when attaching items to the roof of a canal boat (4 or 5mm plate).
The exception was when I was fitting an adjustable tilted solar panel mount I made up which required just one bolt fixing. For this I drilled a 10mm hole in the steel and a 30mm hole in the lining and insulation so that I could fit a nut on the inside so it was secure.
You do need to know there definitely aren't any wires in the way though.
|
|
|
|
Post by lollygagger on Nov 1, 2016 18:55:00 GMT
Rivnuts are great but you must be very accurate with the hole size. The problem comes when the bolt and nut corrode or you've sealed them, then want to remove and they spin. Very frustrating, I've removed many more than I've fitted, I always seem to be the bloke stuck with someone else's spinning flippin rivnuts.
4mm? Just tap it.
|
|
|
|
Post by tonyqj on Nov 1, 2016 19:53:34 GMT
Rivnuts are great but you must be very accurate with the hole size. The problem comes when the bolt and nut corrode or you've sealed them, then want to remove and they spin. Very frustrating, I've removed many more than I've fitted, I always seem to be the bloke stuck with someone else's spinning flippin rivnuts. 4mm? Just tap it. Yes, I've only ever used them in thin ally and steel sheet. As you say, for smaller sizes in 4mm plate just tap it. |
|
