wot thread on rad. fan brackets L & MY ?

steptoe · Post by **steptoe** » Sun Mar 02, 2014 10:10 am

You know the the threaded, captivated square nuts on MY and L radiator brackets that the factory fans bolt to ??

The thread is not M6 1.0mm pitch - unless you force it

Wot is it, anyone know ? M6 with 1.25 pitch or some awful imperial stuff inflicted upon the radiator world - a throw back from copying the Germans , or worse still - Whitworth !! ??

Post by **TOONGA** » Sun Mar 02, 2014 12:10 pm

They should be exactly the same as any other 10mm headed bolt on your subaru.

How do you have all the fun Jonno?

TOONGA

steptoe · Post by **steptoe** » Sun Mar 02, 2014 6:24 pm

yeah, but Jules, they ain't the same as the rest of the nuts, as they are those four side things like you find on lesser engineered items in the world, and are captivated with sheet metal pocket, not spot welds.
Luck, I suppose ??

Gannon · Post by **Gannon** » Mon Mar 03, 2014 4:58 am

Im with Toonga, a standard Subaru bolt with a 10mm head screws straight in.

Post by **Bantum** » Mon Mar 03, 2014 8:44 am

Just get the right tap & clean out the tread, someone must have tried forcing a non metric bolt through it at some stage ...

P.S. - A full metric tap & die set wouldn't go astray for your other Subie projects either ...

Cheers, Bantum ...

steptoe · Post by **steptoe** » Tue Mar 04, 2014 7:27 am

Still on my own here, looks like a remove, take sample to nut shoppe. Can force M6 1.0 but its not right. Two or three radiators so far .....

RSR 555 · Post by **RSR 555** » Sun Mar 09, 2014 11:48 pm

They are M6 coarse thread which is 1.0mm pitch. The only other M6 is fine which is 0.75mm pitch but this is too fine for these radiator bolts. I would say that someone has cross threaded these bolts.

steptoe · Post by **steptoe** » Mon Mar 10, 2014 6:50 am

RSR 555 wrote:They are M6 coarse thread which is 1.0mm pitch. The only other M6 is fine which is 0.75mm pitch but this is too fine for these radiator bolts. I would say that someone has cross threaded these bolts.

Didn't even claim them to be thought of as M6 or even flippin' metric, but some odd thread that is so close that M6 will work if forced, and 20 years later make some believe it is M6. The factory bolts do not have that odd spiral thread that is a mechanical fastening method. The factory bolts fit nice, but other bolts from other points on the Subes do not fit nicely like finger tight, do not look like they have been forced t convert and is found on too many to be butchered in same way. To run a clean or even new M6 1.0mm pitch bolt through nuts cuts new thread on bolt !

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wot thread on rad. fan brackets L & MY ?

wot thread on rad. fan brackets L & MY ?

Tapped out ...