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Ft_bstrd
Posted on Saturday, July 15, 2017 - 10:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anyone have the rear brake rotor bolt specs handy?

They've been moved to "Vintage" and spec'd out for unobtanium composite.
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1313
Posted on Sunday, July 16, 2017 - 10:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

1999 S3 parts book:
3495Y

SCREW, M10 x 25mm, hex socket ctsk. hd.

2002 X1 parts book:
3218Y

SCREW, M10-1.5 X 25 hex socket flat hd.

Didn't realize that they had 'changed'...

So:
M10-1.5 x 25 countersunk head, but no mention of grade.

It's been so long since I 'screwed around' with screws it seems as though I've lost some knowledge...
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1313
Posted on Sunday, July 16, 2017 - 10:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

OK, thanks to the wonders of the internet...

A1025.5CZ was the Buell part number:
A = Metric (AA would be American)
10 = Nominal thread size in mm (American would be in 16ths)
25 = Length in mm (American would be in 8ths, IIRC)
5 = head style, countersunk
CZ = Clear Zinc

But this resource:

rotor screws 1

shows:

rotor screws 2

they are Grade 10.9

I never recall seeing the Grade designation on earlier bolts, so maybe just showing the grade designation is the difference?

I think I've
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Ft_bstrd
Posted on Sunday, July 16, 2017 - 11:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thank you much, sir!
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Court
Posted on Sunday, July 16, 2017 - 12:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not unlike our ownfoolselves . . . Brankin and I are both Grade 10. Sure . . we had hopes . . . but, well, life got in the way.
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