What is the coarse nut?
Coarse nuts is greater than the standard teeth from the pitch of the nut is the thick nut, what is the standard ? As follows:
All of the above is the standard thread, when the tooth diameter to ensure the same, tooth pitch change larger, it is called coarse teeth, such as M6 * 1.0 to M6 * 1.5 or M6 * 2.0 that is non-standard teeth distance . Usually those nuts have to customized.
Why do we want to customize?
As we all know,the standard nut are easily imitated by others,but non-standard nut will not.And then,the non-standard nut will be better to meet customer requirements.