Swing Support Bracket nut??

[BHT2109]

Hey guys, got a boring question for ya: What size nut is used to attach the swing support bracket to the front control arms? The realoem.com diagram actually has this nut greyed out, so it isn't listed for some strange reason.

Little help? (Assuming I embeded the image correctly, it's #13 below. It screws onto the swing bracket, which connects the end link to the control arm).

Thanks all!!

Ben

http://www.realoem.com/bmw/enUS/show...diagId=31_0041

[BHT2109]

Nevermind..

Think I figured it out. A Pelican Parts walkthrough mentioned that it's probably 19mm...