Locks that work

Yes, but no:

Can I get a Pitlock kit for my threaded axle?

Another niggler. Fixers have a thing for tracknuts. Pitlock now make a special Pitlock nut for 10mm axles. Marriage made in heaven? Well, the new Pitlock works pretty well, but i. it is only compatible with particular threadings ii. it is presently rather expensive and iii. it needs a special Pit, larger than the standard ones. The issue is more complex than you might expect: if you want Pitlock tracknuts, write.

http://www.hubjub.co.uk/etc/pitlock.htm

http://www.pitlock.com/fts.php?criteria=M10&x=0&y=0