Looking for a rear end part for Honda 300 4X4

[sm00th026]

I know this is not the right forum to post this. But someone may know someone.
What I need is a jam nut that hold's the bearing up against the pinion shaft. My bearing shot and ate up the jam nut to the point that I can't reuse it.
And, I Hate to pay $30 plus for one nut. SMH!! If you have a shot rearend laying around or the nut I need. Please let me know! Because, I'm in need of one asap!
Thank's for any help!!

[sm00th026]

I've been doing some research. And, the Honda ATC 250sx and the Honda ATC 250 Big Red. Plus the ATV 250, 300, 350. Of 1988 or older All carry the same 60mm locking nut that I need.