Is the pitch of stainless steel screws important?

Generally, when ordering stainless steel screws, customers will usually tell the screw manufacturer that they need M3 and M4 screws, and rarely mention the thread pitch of the screws, so the thread pitch of the screws is not important when we use it?

The pitch of stainless steel screws is very important. If the pitch of the screw does not match the pitch of the inner hole or nut to be assembled, it cannot be used during assembly. The screw, nut or fitting can only be replaced. When ordering screws from the screw manufacturer, if the customer does not specify the thread pitch of the screw, the screw manufacturer generally defaults that the thread pitch of the screw is the thread pitch of the coarse thread.

So if the stainless steel screw spacing is more special, not in line with the coarse thread pitch, before the order must be confirmed with the screw manufacturer of their thread pitch is how much, otherwise when the time to use is unable to screw in. The screw is self-tapping. If the thread pitch is not the standard, it is necessary to communicate with the screw manufacturer before production.