Tie bar bracket bolt length

[boffer8]

Hello,

Does anyone know the size of the vertical tie bar bracket bolt? I know its M10, but whats the length? Number 15 on the blow diagram:

http://i381.photobucket.com/albums/oo255/boffer8/Tie%20bar%20bracket_zpsjs7jcizf.jpg

[slimtater]

http://ecat24.com/opel/catalog/part/1/14/426/4353/19513,19514/