jabbahutt
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 posted on 30/7/06 at 11:18 AM |
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rivnut sizes
hello again
Before splashing out on a rivnut kit could someone please confirm which is the largest size rivnut used on the Indy so I don't end buying a kit
that doesn't go large enough.
Baz mentioned the roll bar is fixed with rivnuts and judging by the size of the holes there are much bigger than M6 which most of the budget rivnut
guns go up to.
Thanks in adavance for the assistance
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DIY Si
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| posted on 30/7/06 at 11:22 AM |
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quote:
Baz mentioned the roll bar is fixed with rivnuts
I hope not!!!! If it is mines coming off and being done properly. Rivnuts are not in anyway structural and should not be used in such
applications/places.
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stevec
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| posted on 30/7/06 at 11:28 AM |
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My mk roll bar was welded on by MK. And one of the things with rivnuts is that a 6mm rivnut needs a hole of about 9.5 mm to sit in. And as you say the
budget tools only go up to 6mm. But some guys on here have made there own clever little tools to fit the larger ones like 8mm. The genuine tools to
fit this size seem to cost lot of money.
Try making something perhaps.But welding is best.
Steve.
[Edited on 30/7/06 by stevec]
[Edited on 30/7/06 by stevec]
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froggy
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| posted on 30/7/06 at 11:30 AM |
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you can use what are commonly known as hank bushes which are basically a nut with a thin shoulder on which crushes up when tightened doing the same
job as the rivnut but much greater load carrying strength
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Danozeman
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| posted on 30/7/06 at 11:55 AM |
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8mm are probably the biggest used. If your roll bar os rivnutted on i wouldnt trust it in the event of a roll.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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John Bonnett
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| posted on 30/7/06 at 02:23 PM |
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I agree with the other posts, the roll cage must not be fixed with rivnuts. Normally a roll cage uses M8 h/t bolts with full nuts on the other
side.
I think the largest rivnut that a standard setting tool goes to is M6. You would need hands like Mole grips to set a steel M8 with the normal
pliers.
Metric rivnuts are available in both imperial and metric o/ds. If you like me standardize on metric drills it is a good idea to make sure you buy the
metric metric rivnuts if you see what I mean. It is also worth having a few imperial metric ones handy because if you do overdrill your metric hole,
you have a second chance to fit an imperial rivnut which, in each size, needs a slightly larger hole than its metric equivalent. Sizes for metric
metric as follows: M4 needs 6mm hole, M5 needs 7mm and M6 a 9mm hole.
I deal with Primary Fasteners, website: http://www.prifast.co.uk/index.htm. Really good service and they will supply small quantities.
John
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jabbahutt
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| posted on 30/7/06 at 04:54 PM |
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many thanks for the prompt replies
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jabbahutt
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| posted on 30/7/06 at 05:04 PM |
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so ignoring the rollbar where I've probably grabbed the wrong end of the stick will up to M6 be okay for everything else such as scuttle
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stevec
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| posted on 30/7/06 at 06:41 PM |
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I have used M6 for the scuttle and the radiator.
Steve.
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