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Love this! Here is a simple example of generating female threads if anyone is looking:

femaleSize = 5.2;
maleSize = 5;
screwHeight=5;
cylinderShell = 2;
cylinderRadius = (cylinderShell + femaleSize)/2;
cylinderHeight=screwHeight;

// Female
difference() {
cylinder (h = cylinderHeight, r=cylinderRadius, center = false, $fn=100);
s_thread(femaleSize,1.5,5);
}

// Male
translate([cylinderRadius * 2 + cylinderShell, 0, 0]) s_thread(maleSize,1.5,5);