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Made in Germany, so it has to be metric - right?
Page 1 of 1
Made in Germany, so it has to be metric - right?
Went to the hardware store yesterday looking for a Taifun intake assembly nut and used one of those fancy displays with all the SA/Metric sized sample nuts. I tried using every conceivable SAE/Metric course/fine samples and nothing worked. Closest I could come was M8 which was too loose, M7 wouldn't even go. Nothing SAE either.
Can't be JIS or Whitworth, so something strange German or maybe specific to Taifun?
![Made in Germany, so it has to be metric - right? Taifun16](https://i.servimg.com/u/f62/19/15/28/33/taifun16.jpg)
![Made in Germany, so it has to be metric - right? Taifun18](https://i.servimg.com/u/f62/19/15/28/33/taifun18.jpg)
![Made in Germany, so it has to be metric - right? Taifun17](https://i.servimg.com/u/f62/19/15/28/33/taifun17.jpg)
External size of the nut doesn't matter, I can always grind/file the face down.
Bob
Can't be JIS or Whitworth, so something strange German or maybe specific to Taifun?
![Made in Germany, so it has to be metric - right? Taifun16](https://i.servimg.com/u/f62/19/15/28/33/taifun16.jpg)
![Made in Germany, so it has to be metric - right? Taifun18](https://i.servimg.com/u/f62/19/15/28/33/taifun18.jpg)
![Made in Germany, so it has to be metric - right? Taifun17](https://i.servimg.com/u/f62/19/15/28/33/taifun17.jpg)
External size of the nut doesn't matter, I can always grind/file the face down.
Bob
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Made in Germany, so it has to be metric - right?
I would guess that it is not a standard thread.
Have you measure the diameter and pitch?
Have you measure the diameter and pitch?
Surfer_kris- Diamond Member
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rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Made in Germany, so it has to be metric - right?
Its probably British 1/2 thread pitch ? You may have to either have one made DYS or find a better upper on the Bay for less $E$ and use it for parts .. here is a chart that's a pain to use . https://mdmetric.com/tech/tict.htm
![Doh!](/users/3015/29/34/60/smiles/874384962.gif)
getback- Top Poster
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Re: Made in Germany, so it has to be metric - right?
There are many non standard thread pitch listed out there. For example the TD .020 Venturi thread pitch is one that was used on Singer sewing machines.
Jason_WI- Top Poster
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Join date : 2011-10-09
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Re: Made in Germany, so it has to be metric - right?
How about BSC? BSC is a thread system used in bicycle industry. Also known as CEI standard.
Would 5/16" / 24tpi be close? That is 7.94mm in metric, so an M8 nut would not be very loose though. But anyway, if you have a bicycle shop nearby, maybe it would be worth a visit?
https://en.m.wikipedia.org/wiki/British_Standard_Cycle
Would 5/16" / 24tpi be close? That is 7.94mm in metric, so an M8 nut would not be very loose though. But anyway, if you have a bicycle shop nearby, maybe it would be worth a visit?
https://en.m.wikipedia.org/wiki/British_Standard_Cycle
KariFS- Diamond Member
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Age : 52
Re: Made in Germany, so it has to be metric - right?
Try 7 mm fine thread.
Levent Suberk- Diamond Member
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Re: Made in Germany, so it has to be metric - right?
Hi Bob, It is M7 fine indeed. That is M7 x 0,75. Below a page out of the French magazine MODEL AVIA of September-October 1968. It's part of a complete article on the Hurrikan. On top of the page, there's a table with the correct threads for each part:
![Made in Germany, so it has to be metric - right? Model_10](https://i.servimg.com/u/f62/18/18/99/77/model_10.jpg)
It says after "écrou-filtre" 7mm diameter and 0,75 pitch. The HS standard means "high strength".
What do I win???
![Made in Germany, so it has to be metric - right? Model_10](https://i.servimg.com/u/f62/18/18/99/77/model_10.jpg)
It says after "écrou-filtre" 7mm diameter and 0,75 pitch. The HS standard means "high strength".
What do I win???
![lol!](https://2img.net/i/fa/i/smiles/lol.gif)
![lol!](https://2img.net/i/fa/i/smiles/lol.gif)
![lol!](https://2img.net/i/fa/i/smiles/lol.gif)
OVERLORD- Diamond Member
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Re: Made in Germany, so it has to be metric - right?
You win the eerou fltre - Filter nut............ if I ever find it. ![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
7mm fine? Wow I swear I tried it several times. Maybe my fumple fingers let me down..........again. I shall go back and try some more.
Thanks Lieven and all.
The worst part is, I know that nut is under some workbench somewhere just begging to be found.
Bob
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
7mm fine? Wow I swear I tried it several times. Maybe my fumple fingers let me down..........again. I shall go back and try some more.
Thanks Lieven and all.
The worst part is, I know that nut is under some workbench somewhere just begging to be found.
Bob
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Made in Germany, so it has to be metric - right?
LOL you gotta hate it when this happensThe worst part is, I know that nut is under some workbench somewhere just begging to be found. wrote:
![DAMMIT!](/users/3015/29/34/60/smiles/2949197080.gif)
![tongue](https://2img.net/i/fa/i/smiles/icon_tongue.png)
getback- Top Poster
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Re: Made in Germany, so it has to be metric - right?
getback wrote: LOL you gotta hate it when this happensJust to know your not alone i lost my 2/56 tap after just one use , found the 4-40 but the little one is missing in action
![]()
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
I always look where it isn't.
Bob's law. Look where it is and you will never find it.
rsv1cox- Top Poster
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Marleysky- Top Poster
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Re: Made in Germany, so it has to be metric - right?
Love the display Rene, story of my life. ![Sad](https://2img.net/i/fa/i/smiles/icon_sad.gif)
But this is weird, crazy, and ridiculous. There appears to be no 7mm 1 or .75 pitch fine nut in the universe.
I went back to the local store and there is a 7mm course nut, but no fine. Came back home and got on to McMaster-Carr who has everything hardware and found their metric fine nuts go between 8mm and up and 6mm fine and down, but no 7mm. Thanks Taifun.
I got a couple of 7mm course nuts with the thought of retapping to 7mm fine, but I doubt I have a 7mm fine tap. A better idea would be to tap out a smaller nut though.
So, guess I will have to put this engine on the scrap heap of life.
Robert.....................![Sad](https://2img.net/i/fa/i/smiles/icon_sad.gif)
![Sad](https://2img.net/i/fa/i/smiles/icon_sad.gif)
But this is weird, crazy, and ridiculous. There appears to be no 7mm 1 or .75 pitch fine nut in the universe.
I went back to the local store and there is a 7mm course nut, but no fine. Came back home and got on to McMaster-Carr who has everything hardware and found their metric fine nuts go between 8mm and up and 6mm fine and down, but no 7mm. Thanks Taifun.
I got a couple of 7mm course nuts with the thought of retapping to 7mm fine, but I doubt I have a 7mm fine tap. A better idea would be to tap out a smaller nut though.
So, guess I will have to put this engine on the scrap heap of life.
Robert.....................
![Sad](https://2img.net/i/fa/i/smiles/icon_sad.gif)
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Made in Germany, so it has to be metric - right?
Try ebay? :
https://www.ebay.com/itm/M7x0-75x2mm-Carbon-Steel-Hex-Nuts-Fastener-50pcs-for-Screws-Bolts/351762031357?epid=1174059695&hash=item51e6a6a2fd:g:5uUAAOSwVtZaR2xI
https://www.ebay.com/itm/M7x0-75x2mm-Carbon-Steel-Hex-Nuts-Fastener-50pcs-for-Screws-Bolts/351762031357?epid=1174059695&hash=item51e6a6a2fd:g:5uUAAOSwVtZaR2xI
Surfer_kris- Diamond Member
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Re: Made in Germany, so it has to be metric - right?
Thanks Kris, but a benefactor might have solved my problem. This forum rocks....... ![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
Bob
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
Bob
rsv1cox- Top Poster
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Re: Made in Germany, so it has to be metric - right?
If you where closer I could have made one for you.
Still possible if nothing else works out...
Still possible if nothing else works out...
Surfer_kris- Diamond Member
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Re: Made in Germany, so it has to be metric - right?
Hi folks, for what it's worth, 7mm threads are common on Vespa scooters and Ducati motorcycles, older ones anyway. Only in 1mm pitch on my Ducati though, don't know about Vespa.
Robbasdog- Silver Member
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Re: Made in Germany, so it has to be metric - right?
Ah, the 7mm x.75 pitch nut looks like its used on potentiometers and toggle switches.
coxaddict- Gold Member
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rsv1cox- Top Poster
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Re: Made in Germany, so it has to be metric - right?
rsv1cox wrote:Well, Thanks to Lieven, one now resides on the back of my Taifun engine.
Bought a can of starting fluid and hope to mix up some diesel and run it this spring.
Looking forward to that Bob. The nut is indeed from a potentiometer, the smaller ones.
OVERLORD- Diamond Member
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