M 25 mm lead screw nut, what is the pitch?

As can be seen from the above picture, there are two points:

1, the general sales specifications are M24 and M27, and M25 is a non-standard product;

2. The pitch of fine teeth of 2.M24 and M27 is 2mm, and the pitch of standard teeth is 3mm, which are the same, so M25 is between them, and the selected pitch should be consistent with them.

Because the screw and nut are threaded, the nut is fixed and the screw is fixed.