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 M7 bolts...... 
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Joined: May 23rd, 2011, 7:14 pm
Posts: 231
Location: ecosse
Post M7 bolts......
Were Citroen the only ones to ever use this size..........'kin expensive !


July 6th, 2020, 3:16 pm
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Joined: March 21st, 2013, 12:04 am
Posts: 1048
Location: Exeter, Devon
Post Re: M7 bolts......
Part of its character :)
I just bit the bullet, and bought some (+ nuts) from ecas. Added them to an order. I'm glad to just be able to pick one out of my new spares box :)

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July 6th, 2020, 3:33 pm
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Joined: March 5th, 2009, 6:23 pm
Posts: 1884
Location: Near Monmouth
Post Re: M7 bolts......
Maybe a myth ...Lambretta and Lamborghini used them.
A thought by using M7 in place of M8 the weight saved would be about 12.5% less for the total of bolts used, perhaps a weigh in between M7/M8 for QED.


July 6th, 2020, 4:05 pm
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Joined: April 9th, 2010, 12:21 am
Posts: 436
Location: West Sussex
Post Re: M7 bolts......
subarupete wrote:
Maybe a myth ...Lambretta and Lamborghini used them.....

I didn't know about Lamborghinis but Piaggio used them on Vespas. Also I remember replacing a damaged gearbox casing on a Talbot Samba Cabriolet* in the 80s: all the bolts holding the casings together were long M7s. (*Same engine/box as used in Peugeot 104, some 205, some Visa, early BX14, Renault 14, etc).


July 7th, 2020, 2:52 am
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Joined: October 22nd, 2014, 10:59 pm
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Location: South-Limburg
Post Re: M7 bolts......
Bicycles...


July 7th, 2020, 6:18 am
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Joined: March 5th, 2009, 6:23 pm
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Location: Near Monmouth
Post Re: M7 bolts......
@chevrons2

Same engine/box as used in .....

Even more so now.

VAG Audi, Bentley :), Bugatti, Lamborghini, Porsche, SEAT, Škoda
BMW Mini and Rolls Royce :),
Fiat Alfa Romeo , Chrysler, Dodge, Ferrari , Jeep, Lancia , Maserati , Ram and SRT.
Morgans - Ford/BMW Engines - Getrag Gearboxes
JLR - Ford Engines in some and BMW Engines??
Volvo - Where based on the Ford Platform.. Engine/Gearbox
PSA - Peugeot, Citroen, Opel, Vauxhall + Toyota?
Renault–Nissan–Mitsubishi

Only the cars Silhouette and Badge are unique.....Sort of smoke and mirrors.




JLR in trouble PSA have their Eyes on them.


July 7th, 2020, 8:47 am
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Joined: August 8th, 2012, 11:00 am
Posts: 398
Location: Korpilahti, Finland
Post Re: M7 bolts......
subarupete wrote:
JLR in trouble PSA have their Eyes on them.

And have used PSA diesel engines on some Disco's and Range. TDV6, based on HDi V6, both 2,7 and 3,0 engines used... And not with any problems, the 2,7 is known of it's habit to have crankshaft split...

M7 bolts I have seen also on Russian motorcycles and BMW engines in their inlet manifolds about 1980-1990 models...

How about M7 vs. 1/4" UNF..?


July 7th, 2020, 11:27 am
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Joined: April 9th, 2010, 12:21 am
Posts: 436
Location: West Sussex
Post Re: M7 bolts......
jasu wrote:
How about M7 vs. 1/4" UNF..?

1/4" UNF is smaller (6.35mm) and finer thread (0.9mm) than M7x1.0.


July 8th, 2020, 11:14 am
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Joined: March 26th, 2010, 8:41 pm
Posts: 233
Post Re: M7 bolts......
M7 are used for galvanised fence wire strainers - but I wouldn't dream of using the nuts on a car.


July 13th, 2020, 9:15 am
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