Mixed dimensioning might be the way to go as the current Myford site lists cross slide screws as 3/8” x 2mm pitch!
Typical Myford cost saving when making feedscrew for their metric models.
Uses the same barstock and feeders as their 3/8 x 10tpi imperial screws. Just change the rollers on the thread rolling machine and carry on. And use the same collets to grip the screw while machining the spigot and thread for the handle.