include <BOSL2/std.scad>
include <BOSL2/screws.scad>
include <BOSL2/threading.scad>

$slop=0.05;
$fn = 360;

h1 = 10;
h2 = 10;

out_d = 6.5;
t = 1;

threaded_nut(id=6, pitch=1, h=h1, nutwidth=10, left_handed=true);
up(h1 - 1) xrot(180) screw("M4,10", head="flat large");

up(h1) difference() {
    cyl(h=h2, d=out_d+2*t, rounding2=t/2);
    cyl(h=h2, d=out_d, rounding2=-t/2);
}