How to install embedded round nuts?

Inline round nut installation: The round nut stop washer has teeth both inside and outside. On the external thread that mates with the round nut, holes or grooves should be made to incorporate the internal teeth of the washer. After the round nut is tightened in place, the outer teeth of the washer corresponding to the tightened nut should be bent and embedded into the groove, so that the round nut will be fixed.