Anyone know how to check an external (due to old rule number 3) thread for pitch also so i can use it as a Datum ? Any simple step-by step direction would be awesome!!!
You can buy a datum simulator, they are like ground sleeves that fit over the thread with a plane diameter on the outside. That is as close as you can get to actually picking the pitch diameter up as a datum feature. They are also available for inside threaded holes and used to check the position of them.
I've seen the plugs for ID threads, but I have never seen one for an external thread. Are they priced similar to their internal counterparts? Do you have a link for a company that manufactures these? The internal Jo-Plug's worked great, but it doesn't look like they manufacture for external threads.
You can buy a datum simulator, they are like ground sleeves that fit over the thread with a plane diameter on the outside. That is as close as you can get to actually picking the pitch diameter up as a datum feature. They are also available for inside threaded holes and used to check the position of them.
I've seen the plugs for ID threads, but I have never seen one for an external thread. Are they priced similar to their internal counterparts? Do you have a link for a company that manufactures these? The internal Jo-Plug's worked great, but it doesn't look like they manufacture for external threads.
