Thank you for the reply.
Bottle caps are measured in mm ID and threads are given in TPI. Not sure why.
This is HDPE plastic cap and the threads are buttress style. Here is a link to the typical cap. http://www.riekepackaging.com/pail-and-can-products-print/6
Caps seal between the top of the...
Do more threads increase strength?
I am designing a bottle to fit with a standard closure. I will likely use 70mm x 8TPI. I will have an aluminum threaded cap made that can be reused, this is needed because it will have a hose connected to the metal cap. I am not so concerned about the...