Dangle_kt
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| posted on 30/4/08 at 11:05 AM |
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Imperial size question
Hi,
I have an allen key head bolt that holds the trailing arms in place, unfortunly the are HUGE and I dont have the right key to hand. I was thinking of
buying the right socket size for it rather than a large key and was hoping someone could help me figure out the size.
I have mesured it from internal face to internal face and its 8.5mm approx - but what size is this in imperial?
I know its approx 0.334 inches - but the sizes dont work like that.
Hope someone can help, getting this Diff out if turning into a right cuffuful.
Cheers
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mookaloid
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| posted on 30/4/08 at 11:11 AM |
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looks like about 5/16" to me
"That thing you're thinking - it wont be that."
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02GF74
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| posted on 30/4/08 at 11:12 AM |
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5/16 = 7.9 mm
11/32 = 8.7 mm
3/8 = 9.5 mm
I now see you say approx - then it'll be 5/16 in; an 8 mm will be just as good.
[Edited on 30/4/08 by 02GF74]
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Dangle_kt
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| posted on 30/4/08 at 11:23 AM |
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Thanks very much! 
I said approx as the calipers are only marked up in MM so I had to guess the rest, but it is definatly over 8mm. I'll buy both to be sure.
Before I go and undo them, can I check my logic - diff is undone, and loose, but can't come free due to the chassis and axle being too close
together. By undoing the trailing arms on one side - at the point they meet the chassis (on the passenger side panel) I will be able to move the whole
axle back and the diff will drop.
that sound about right?
[Edited on 30/4/08 by Dangle_kt]
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mad4x4
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| posted on 30/4/08 at 11:25 AM |
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IMHO
If it is a socket head cap screw surely an 8mm would be to big and need to be hit into the allen head - Now if the head of a nut was 7.9 mm A/f then
yes an 8mm spanner would fit......
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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Hellfire
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| posted on 30/4/08 at 03:58 PM |
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On Ford Calipers of old the retraction Hexagon used to be 7.5mm in a bid to get DIYers to buy their Special Tool at premium cost - I got an
8mm and ground it down - I believe I still have it - I think the "Neglected Tool Fairy" may have scattered her brown magic dust on it
since I used it last though... 
At least you have an option - get an old 3/8" (9.525mm) and grind some off... to make it fit! Always a good Locost option in my eyes.... only
grind 3 of the faces - not all 6 tho' 
Steve
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MikeRJ
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| posted on 30/4/08 at 05:20 PM |
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quote:
Originally posted by Hellfire
At least you have an option - get an old 3/8" (9.525mm) and grind some off... to make it fit! Always a good Locost option in my eyes.... only
grind 3 of the faces - not all 6 tho'
Steve
I'f often ground down allen keys for various specials, they are cheap and easy enough to replace. You can even make a torx key if you are
carefull enough.
Why only the three faces however? Surely you'd end up with the faces being two different sizes?
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Dangle_kt
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| posted on 30/4/08 at 05:36 PM |
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I'm guessing the 2 of the 3 sides you grind will impact on the remaining two - because they touch.
quote:
Originally posted by MikeRJ
quote:
Originally posted by Hellfire
At least you have an option - get an old 3/8" (9.525mm) and grind some off... to make it fit! Always a good Locost option in my eyes.... only
grind 3 of the faces - not all 6 tho'
Steve
I'f often ground down allen keys for various specials, they are cheap and easy enough to replace. You can even make a torx key if you are
carefull enough.
Why only the three faces however? Surely you'd end up with the faces being two different sizes?
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