Read the forum code of contact
By: - 26th August 2016 at 18:13 Permalink - Edited 1st January 1970 at 01:00
I believe there are actually no 'aircraft quality' metric bolts.
I think you'll end up going to a commercial fastners business.
You'll need to know the grip length you require & cut the thread back to size. And then you drill the thread.
Please visit the shop, when they are not busy! A serious piece of advice.
By: - 26th August 2016 at 18:53 Permalink - Edited 1st January 1970 at 01:00
Not liking the idea of going the commercial bolt route - quality control is so important. There must be some out there - I doubt the French manufacturers used Imperial........
By: - 26th August 2016 at 19:02 Permalink - Edited 1st January 1970 at 01:00
All of the German glider manufacturers will supply metric nuts and bolts with an EASA Form 1.
The Eurofighter Typhoon engine, the EJ200 was/is all metric nuts and bolts. Not sure about the airframe, but I know all the big civil (even if it's French) is still imperial, Or I should say American.
I think all the Russian hardware is metric but not sure what release it comes with.
By: - 26th August 2016 at 19:15 Permalink - Edited 1st January 1970 at 01:00
Hawk,Jaguar and Tornado also have metric hardware. Airbus as well. I see limited stocks outside of commercial. LAS aerospace do have a small (expensive) collection.
By: - 26th August 2016 at 19:23 Permalink - Edited 1st January 1970 at 01:00
One of the standard metric a/c bolts would be S105-05 -xx (length) - used by the thousand on Hawks.
Tornado bolts were a different part number but not au fait with them.
By: - 26th August 2016 at 19:50 Permalink - Edited 1st January 1970 at 01:00
I think the S105 series & others used on Hawks were/are BAe (or Hawker in old language) specification when they went metric. The rivets were metric dimensions of Imperial sizes, in other words identical as far as I'm aware!
I believe that there are LN standard metric items in existence, but seem to be like hens teeth in UK. Had this problem when designing a bit of hardware back in the 80's for the ESA space lab! Used commercial stainless bolts in the end.
By: - 26th August 2016 at 20:22 Permalink - Edited 1st January 1970 at 01:00
Yes Dev - S105 etc was Hawker Squiddeley spec.
An S105-05-08 would be NSN 5306-99-616-5187.
A drilled bolt would have an 'H' within the part number -something like either S105H-05-08 for drilled head / S105-05-08H or H08 for drilled shank (cannot remember exactly !)
Somebody might have some in stock ?
By: - 26th August 2016 at 20:59 Permalink - Edited 1st January 1970 at 01:00
Phil, I spent a very long time looking, and unless you can find NOS, there aren't any. If you need specific bolts, you need to make them from an appropriate steel. Not cheap.
By: - 26th August 2016 at 21:56 Permalink - Edited 1st January 1970 at 01:00
Las items
https://www.lasaero.com/site/products/category?id=E04K78T67
Socata are metric btw, the engine isn't though.
By: - 26th August 2016 at 21:57 Permalink - Edited 1st January 1970 at 01:00
So try
http://www.sky-craft.co.uk/acatalog/Skycraft_Home_Builder_Permit_Aircraft_Metric_Harware.html
Closing but still up
By: - 26th August 2016 at 22:12 Permalink - Edited 1st January 1970 at 01:00
If you have a part number I can run it through partsbase for you
Have you tried
Adams Aviation
Global Aviation
Airparts
By: - 26th August 2016 at 22:14 Permalink - Edited 1st January 1970 at 01:00
http://www.clarendoneng.co.uk/products/aerospace_bolts/NAS1102.html
By: - 26th August 2016 at 22:56 Permalink - Edited 1st January 1970 at 01:00
Yak, Wilga and Sukhoi plus Robin 2120/2160 etc are metric as are all DH Gipsy engines al.though they have BSF/Whit head size
By: - 27th August 2016 at 01:05 Permalink - Edited 1st January 1970 at 01:00
Thanks for the offer of checking Tony. Unfortunately the bolt doesn't display a part number and the neither the parts catalogue nor any of the other manuals are of sufficient detail to list it. They're great on the system fit, but when it comes to the airframe structure they're hopeless. That said I'll measure up the details when I get back and I'll pop them over. They may make sense with something existing doing the job.
If not you may well be right Bruce. There is a machine shop not far from you that I've been using for parts for the black machine that I may well have to ask to look at these.
By: - 27th August 2016 at 15:56 Permalink - Edited 1st January 1970 at 01:00
Yak, Sukhoi etc are all metric as suggested, but we didn't like the quality when we were building the 190.
By: - 27th August 2016 at 19:34 Permalink - Edited 1st January 1970 at 01:00
Just googled LN series bolts & found that its a DIN aerospace standard, LN 9355 sounds like it is what you need for a drilled shank/tail. Two suppliers one French manufacturer & one in UK for Fournier aircraft, but not sure what size. Seems that Extra aircraft also specify DIN LN series.
Good luck
Posts: 268
By: chippie51 - 26th August 2016 at 17:54
We're on the look out for any metric hardware (or quality purveyors thereof) for aircraft use. We've drawn a blank in the UK, all the usual suppliers unable to help. Major requirement at the moment is a range of 5mm bolts with a thread drilled for a pin.
Anyone come across anyone in the UK or abroad?
Thanks