Author Topic: Blue Nut for dash wood trim  (Read 1567 times)

yves

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Blue Nut for dash wood trim
« on: January 17, 2023, 11:03:13 »
I try to unscrew those nut but  10 mm is too small and 11 too large !
Wht's wrong ?  :o
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

cfm65@me.com

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Re: Blue Nut for dash wood trim
« Reply #1 on: January 17, 2023, 14:28:42 »
Try 3/8
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WRe

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Re: Blue Nut for dash wood trim
« Reply #2 on: January 17, 2023, 15:51:58 »
Hi,
Afaik original nuts are 9mm.
...WRe

wwheeler

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Re: Blue Nut for dash wood trim
« Reply #3 on: January 17, 2023, 17:07:42 »
And yes, the blue nuts should be 9mm. .355" = 9mm. A few years ago we did a project here where we created new 3D printed nuts. See print attached. These were very close copies to the originals. 
Wallace
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

yves

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Re: Blue Nut for dash wood trim
« Reply #4 on: January 18, 2023, 12:13:26 »
Ok I'll try 9mm...
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

MikeSimon

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Re: Blue Nut for dash wood trim
« Reply #5 on: January 19, 2023, 13:20:30 »
It always amazes me that in non-metric measurements countries, dimensions of parts and items on metric vehicles are attempted to be called out in standard values. I have a couple of Japanese bikes and the forums are full of guys who want to quote dimensions in inches.  :o
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner

wwheeler

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Re: Blue Nut for dash wood trim
« Reply #6 on: January 20, 2023, 02:23:11 »
When I design things, I can relate to inch measurements because that is what I grew up with and .001" means more to me in my head than .0254mm. Given that, I usually try to convert when metric is used such as with Euro cars. Pretty easy to convert and I hope most know how to do that. 
Wallace
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

Figoulu

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Re: Blue Nut for dash wood trim
« Reply #7 on: January 20, 2023, 07:08:49 »
Ok I'll try 9mm...


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MikeSimon

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Re: Blue Nut for dash wood trim
« Reply #8 on: January 20, 2023, 14:24:07 »
When I design things, I can relate to inch measurements because that is what I grew up with and .001" means more to me in my head than .0254mm. 

Key thing, I guess, is what you grew up with, as you say. However, I find it easier to tell that a 14mm wrench/nut is larger than a 12mm wrench/nut as opposed to tell if a 5/8" is larger or smaller than a 9/16". Besides, the precise measurements on our cars are metric and a conversion to "standard" is always an approximation and a perfect fit would be a coincidence.
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner