The main difference between the thread and the outside thread? Is it mainly on the car knife?
The processing method is the same as the external thread first to get the outside diameter car good inside screw to have a good thread bottom hole
The thread needs to be drilled first and then applied to the inner surface with the tool.I hope my answer will help you.
There is an internal threading tool that can be used to thread the bottom hole.I hope my answer will help you
