Rivet nuts

[aled1590]

Has anyone used m10/12 rivet nuts for fitting feed barriers to posts? I have 120mm box posts and save drilling through both sides and using a long bolt I could use a rivet nut? I’d make sure the brackets on the cattle side of the post so they’re pushing against the post if you get me. TIA

 

[Adeptandy]

Not used them on anything that big, but get on well on boiler cases

 

[Nearly]

Either tap a thread in the actual wall of the post or drill through.

 

[milkloss]

I reckon they'd come loose.

 

[Lincsman]

I reckon they'd come loose.

Wont they tighten up again when you tighten the bolt?

 

[milkloss]

Wont they tighten up again when you tighten the bolt?

Knowing my luck they wouldn't...... just spin round and laugh at me!

 

[quattro]

Used them to extend sides on a alloy bulker worked well never came loose

 

[Rod Dumbreck]

We have some that came with stable partitions for the chain that keeps the horses on while you are mucking out etc. I thought they would be useless, but if you see the state of the chains and other fittings, then they've gone up in my estimation. Do they do them in 16mm?

 

[Kevm]

Only thing with rivnuts is whatever you are bolting on always stands off by the thickness of the Rivnut flange, which can make the bracket wobble and come loose, that's why if you can it would be better to bore right through and use a long bolt and then the bracket will tighten up flat against the box.

 

[Rod Dumbreck]

Only thing with rivnuts is whatever you are bolting on always stands off by the thickness of the Rivnut flange, which can make the bracket wobble and come loose, that's why if you can it would be better to bore right through and use a long bolt and then the bracket will tighten up flat against the box.

I find that the box bows and lets them slack over time with the cattle working away at them, if they are bolted through. Thought of trying a spacer tube so that the box didn't crush, but you are back at square one then.

 

[wdah/him]

i have used 10mm bolts that u bore a 8.5mm hole for and the bolt threads itself. cant find a link but am looking. the bolts are triangular to start and i used the impact gun, dont think they go bigger than 10mm, but would used them more than chance a revit nut

 

[Rod Dumbreck]

just put two where one will do!

 

[aled1590]

it would definitely look tidier than a long bolt through the box and a thread and nut sticking out into the feed passage. I quizzed Teemore rep about it and he said a few had done it and worked. Still not sure though!

Only thing with rivnuts is whatever you are bolting on always stands off by the thickness of the Rivnut flange, which can make the bracket wobble and come loose, that's why if you can it would be better to bore right through and use a long bolt and then the bracket will tighten up flat against the box.

unless i drill the hole first and then with a larger diameter bit just drill in to the same thickness of flange so it’s inset in the steel so the bracket will be flush on the box?

 

[Kevm]

Yeah, I have tried that insetting thing before with Rivnuts but then is the steel thick enough to do that.
If you put a long bolt through you can put a nylock on and cut the excess thread off and if it comes loose tighten it.
If you go with the Rivnut you cant really use any sort of threadlocking except Loctite and it may still come loose.

 

[aled1590]

Yeah, I have tried that insetting thing before with Rivnuts but then is the steel thick enough to do that.
If you put a long bolt through you can put a nylock on and cut the excess thread off and if it comes loose tighten it.
If you go with the Rivnut you cant really use any sort of threadlocking except Loctite and it may still come loose.

The steel is 5mm thick. Probably right bolt straight through is safest bet in the end

 

[Lincsman]

Only thing with rivnuts is whatever you are bolting on always stands off by the thickness of the Rivnut flange, which can make the bracket wobble and come loose, that's why if you can it would be better to bore right through and use a long bolt and then the bracket will tighten up flat against the box.

What about a big washer around the rivet head?

 

[spanners and hammers]

you could use lindater hollo bolts you dont need to buy a insert tool and they are stronger

 

[spanners and hammers]

and you can get dome head or csk. so nothing to rub on

 

[aled1590]

Just googled lindapter. Looks the dogs bullocks but not cheap though

 

[roscoe erf]

I reckon they'd come loose.

i agree they look like they would be to weak