coilover springseat/locking nuts

[team13]

does anyone know where i can find springseat locking nut or spanner bolts
there silkroad r8 i think thread is m52x2.0

http://i1205.photobucket.com/albums/bb432/kimoabitz/100_2610.jpg (http://s1205.photobucket.com/user/kimoabitz/media/100_2610.jpg.html)

[The Dude]

Coilovers S13 S14 S15 240sx Silvia 180sx - POWERED BY MAX (http://www.gtfactory.jp/cms/page.php?23)