I've seen these on eBay, they are cheap at £2.99p for a pair.
http://www.ebay.co.uk/itm/142576602544? ... Track=true

I don't really remember the small groove/nick halfway down the nut flat, but for sure they were a long nut, at least twice the length of a standard nut. Certainly not metric you're right.Varastorm wrote: ↑Sun Dec 10, 2017 8:18 amI had a quick look last night Chris. They might of been imperial UNF, but there are loads of m8 fine (1.25) for sale on ebay.
The ones I remember were quite deep/long & had a small groove/nick half way down the flat. If they were grubby, it looked like it was 2 nuts. like a locknut that'd lined up perfectly.
If I was going to do this, I'd like to go nuts deep, oops, Ooh err Missus. I mean to get the deep nuts.![]()
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I'll have a look for some combo studs, M8 1.5 to M8 1.25![]()
Luv your work with header flanges
That's good news with your filesVarastorm wrote: ↑Tue Dec 12, 2017 10:59 pm Thanks for the positive comments guys![]()
The pictures might make it look easy, but in reality they were a pain to make. All day it took me, I was frozen & it was raining on & offBut they're done now
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I really didn't want to make these, but with the rest of the exhaust going to be stainless it was a no brainer.
As Chris mentioned, with them being stainless they were harder to work with too. As for the files Chris they are a good make & held up well![]()
I'm looking forward to making the spigots, but the parts for that are still in transit from China.
Sorry if its a little picture heavy guys![]()
I have a feeling they will be hollow filled with heat resistant material, otherwise they won't crush to remove any discrepancies if they were solid. Don't worry though, and so you don't feel so badVarastorm wrote: ↑Thu Dec 14, 2017 2:29 pm More goodies arrived today
One problem, the id measurement of 39mm doesn't correspond to the gaskets.
It must be what they'll become when crushed up to the recommended torque.
I'm disappointed with 39mm id when the pipe id is 42mm. I know it's no biggie in the real world, but when your fabricating a new exhaust it's an unnecessary restriction.
Lucky for me, when the spigots are fitted & all torqued up I'll still be able to reach in with a die grinder to clean the protruding gasket from the exhaust![]()
Just hope they're not hollow![]()