M3x40 - partially threaded screw for Rugged Box

this is a remix of the bolt you need to build “rugged boxes”

You should use this bolt for the locking pin meckanism, it only has thread on the first and last 5mm, so it will look much cleaner than a normal screw.

In my case, see the picture, i broke the head of the bolt and pushed the pin in to have it even cleaner

different lenghts (15, 20, 25, 30, 35, 40mm) available on my profile