lead screw selection

I have a home brew project and would like to use ballscrews. Since I
don't require super precision accuracy (only Plus or minus .015" per
foot), can any one recommend a brand and source of economical lead
screws and ball nuts in the 5/8ths inch range? Travel required is
only 10x10 inches on an x-y platform. I only need a useful life of
about 300 hours run time on the project.

Thanks in advance for any replies.

John Ocala Florida