Old Style (~74mm Nato) Filter threads

This is a thread that you can use to build projects based on the old 74mm NATO filter standard. Sometimes, you can find these filters on sale, such as:
https://smile.amazon.com/gp/product/B00I0G0V96/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

The sample part uploaded adapts the linked P100 filter to the input of a cheap organic vapors filter. (I am working on a fume filter for 3d printers.)
(Example cheap organic (charcoal) filter: https://smile.amazon.com/gp/product/B000XUF7RI/ref=oh_aui