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What bolt head is this please?
Posted: 25 May 2018, 13:24
by itchyfeet
not seen these before?
P1100375 by
Paul_Barr, on Flickr
Re: What bolt head is this please?
Posted: 25 May 2018, 13:35
by 937carrera
Well, I'd call it a 12 point star socket, but I think it's officially a "triple square" / XZN fitting.
This might help
https://en.wikipedia.org/wiki/List_of_s ... ple-square
I'm pretty sure I have a set, bought "just in case". I have only ever used them once, on Vauxhall Vectra suspension. The equivalent bolt on a Saab 9-5 (virtually the same suspension) is a simple hex

Re: What bolt head is this please?
Posted: 25 May 2018, 13:39
by 937carrera
Forget that, looking again it seems to be a flywheel bolt, in which case it's probably just a simple 12 point spline, they're used on Polos etc. That's the disadvantage of buying 6 point sockets to avoid rounding for most work.
Re: What bolt head is this please?
Posted: 25 May 2018, 13:45
by davidoft1
its a double hexagon nut or 12 sided, normal 12 sided socket will fit
Re: What bolt head is this please?
Posted: 25 May 2018, 13:52
by itchyfeet
davidoft1 wrote:its a double hexagon nut or 12 sided, normal 12 sided socket will fit
Thanks
yes it never occurred to me to try one and it fits
P1100376 by
Paul_Barr, on Flickr
Re: What bolt head is this please?
Posted: 25 May 2018, 13:59
by davidoft1
itchyfeet wrote:davidoft1 wrote:its a double hexagon nut or 12 sided, normal 12 sided socket will fit
Thanks
yes it never occurred to me to try one and it fits
P1100376 by
Paul_Barr, on Flickr

Re: What bolt head is this please?
Posted: 25 May 2018, 15:33
by 937carrera
I was so thrown by the fact that Itchy didn't know the answer I went off down a rabbit warren of unnecessary complication. I knew what I meant but that was no use at all to him
They're usually 9mm - 11mm as you found out
Is that another WBX you're rescuing
Re: What bolt head is this please?
Posted: 25 May 2018, 16:01
by itchyfeet
937carrera wrote:
Is that another WBX you're rescuing
no these are not used on WBX, its a used engine for this which has lost compression on one cylinder, get engines so cheap not worth stripping it down.
P1070831 by
Paul_Barr, on Flickr
engine came home in a T3 so kind of relevant and it's had a WBX in the back before
P1100360 by
Paul_Barr, on Flickr
2012-12-11 14.04.36 by
Paul_Barr, on Flickr
Re: What bolt head is this please?
Posted: 25 May 2018, 16:32
by 937carrera
Ah yes, a mini Polo, otherwise known as a Lupo. At least I recognised what the bolt was from.
Looks like you'll almost be able to lift that engine out one handed
Unusual reg

Re: What bolt head is this please?
Posted: 25 May 2018, 16:34
by itchyfeet
I think engine weights nearly as much as a WBX
all my reg plates are personalised by photoshop
20170819_112521 by
Paul_Barr, on Flickr
Re: What bolt head is this please?
Posted: 25 May 2018, 16:39
by 937carrera
I'm going to have to watch out for subliminal messages in the reg plates then.

Re: What bolt head is this please?
Posted: 25 May 2018, 16:44
by itchyfeet
I'm amazed how many people think they are real and comment.
Re: What bolt head is this please?
Posted: 25 May 2018, 17:07
by 937carrera
I thought the Lupo reg was too, Y being a good prefix, though if I look closely enough it's obvious the Tin Top on the left is a fake
