Water/Pop/Soda Bottle Cap Lid

This was taken from the PCO1881 thread spec published by the IBST published here: http://www.threadspecs.com/assets/Committees/Packaging-Technology/19/3784253-19.pdf

I wrote an in-depth guide for replicating these parts with SolidWorks here: http://www.agcross.com/2014/11/modelling-and-3d-printing-a-water-bottle-cap-with-threads/