Control Arm Hex bolt thread question

[ibtisam.jawad]

Is part number N0403211 "Porsche Hexagon-head bolt m 10x65" fine thread or coarse thread? i.e. is it M10x 1.25mm x 65mm or M10 x 1.5mm x 65mm? I did the search but it does not show whether these are fine or coarse threaded bolts. For instance, part number 900.082.039.02 is Porsche Hexagon-head bolt m 12x1.5x100. This clearly means that the thread is fine thread because of the 12x1.5. Coarse thread in M12 is usually 1.75.

** Should I assume that N.040.321.1 would be fine thread and order bolts that are M10x1.25x65?

** Also, I have the same question for N0104456 "Porsche Hxhd screw 10x45". Is it M10x1.25x45 or M10x1.5x45?

** 900.075.079.02 Porsche Hexagon-head bolt m 8x22 -- Is this 1.0 or 1.25?

** N90087601 Porsche Nut -- are these 1.0 or 1.25 or 1.5?

** 900.910.022.09 Porsche Lock nut m8 -- are these 1.0 or 1.25?


Thank you.

[ibtisam.jawad]

anyone got any ideas?

[FransB85]

standad M10 is 10x1.5. fine is 10x1.25. If it only says M10 and does not specifiy 1.25 I'm almost positive it's standard 1.5.
I recently looked up the rear control arm mount bolts, they are mentioned in PET as M10. I measured one ith a thread gauge to be sure and it was standard 1.5.
So I assume that unless it is otherwise specified, standard metric thread windings apply. (I know, assumption is the mother of all fck ups)

[ibtisam.jawad]

Originally Posted by FransB85

(I know, assumption is the mother of all fck ups)

And on that note, I ordered all available thread sizes in bolts where a size wasn't specified. I will update this thread with the correct thread size once I have received the bolts.

I ordered these in class 10.9 from bolt depot.