If you get an aftermarket halfshaft, it comes with a reuseable nut.

So maybe you can con a local auto parts store into getting you a nut off a halfshaft

Goin' Round Traffic Circles @ 50Km/h!!! \m/ -- 1998 E0 SVT #2119 of 6535 \m/ -- 2003 Sentra SE-R Spec V