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Mk1 escort - rear shock+U bolt shackle thing


davidian

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any ideas what size and thread nut these run?

Tried M12 - too small, M14 - too big, 1/2'' UNF - too small, 9/16 UNF too big... Steelmasters don't have anything that fits (first time ever).

Any ideas before I take the grinder out would be highly appreciated.

PXL_20201221_004934839.jpg

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@torton after trawling the shit out of forums, Ive found references to MK1 originally being imperial (mine is '68 - first year), then the Mk2s went metric, so not the same apparently.
I've had a thread guage onit and it was close/same as a 1.25 so Id say not UNC...

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1 hour ago, davidian said:

your kind responses are not helpful sorry. I have tried both sides and I have measured both with digital verniers. M12 is SMALLER

cheers

Post the dimensions of the bolt and thread pitch then. We are all just throwing darts at a board hoping to hit the bullseye with the details provided.

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1/2" UNF = 20 TPI

1.25mm pitch = 20.3 TPI

If M12 is too small, but the thread measures very close to 1.25mm pitch, I would hazard a fair guess that its 1/2" UNF with a damaged thread.

If your caliper measurement was anywhere near 12.7mm then yeah, bullseye.

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cheers to you all lads, I will clean up the thread an try the 1/2UNF again.

To my eye, both M12 and 1/2 were just a shade not big enough on the ID to fit over the thread, whereas 14 and 9/16 slid over the top.

 

@kyteler I'd love to try a M13 but no one stocks them (as in steelmasters, AES, blacks etc.)

worse comes to worse the grinder will come out, replace stud with a bolt + sleeve and done, just wary of welding anything suspension wise (altho original has welds in it)

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