nut sizes

[nath86]

Whats the size of nut i need to replace on the turbo when fitting decat (i mean the ones the decat bolts to the turbo with) ive looked on here and vag cat some say its m18 and vag cat say m10 but no idea on thread pitch? Help pls
Also its an lc 180 auq and do they need to be locking nuts

 

[nd-photo.nl]

Get them from the dealer, they will get ya sorted out

 

[nath86]

Was after a cheaper option as i can get them for nowt else where juat need to no the sizes