Hello Hank
I have two lead screws taken from a cnc measuring machine that was being scraped, and are too small for my requirements. The thread diameter is 11.4mm and the pitch is approximately 12mm, the thread lengths are approximately 880mm and 610mm the nuts are some sort of nylon. The two open ends are machined to 6mm diameter with a 9mm sleeve pushed over them. These are available if you could make use of them.

Ivan.

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