rolled ballscrew minor diameter?

[ged]

Hi everyone! I have aquired 4 ballscrews that are 3\4x5(.200 lead).They only have approx.3" of travel.single ballnuts are in excellent shape but the rolled screws are too short.So what I need to know is ,are all rolled ballscrew minor diameters the same from company to company?major dia. is .770 and minor dia. is .690 on the ones that I have.There are no markings at all and the flange and nut are one piece. They look to be precision rolled.Any help would be greatly appreciated Thanks GED.

[ViperTX]

Nook and THK should be the same...check out their websites.

[ged]

thanks for info ViperTX