$fn=60;

include <BOSL2/std.scad>;
include <nutsnbolts/cyl_head_bolt.scad>;

module screw() {
    *nutcatch_parallel("M5", clh=0.1);
	hole_through(name="M5", l=20, cld=0.1, h=4, hcld=0.4);
	*nutcatch_sidecut("M5", l=20, clk=0.1, clh=0.1, clsl=0.1);
}

difference() {
    union() {
        zcyl(l=5, d=18, rounding1=1, anchor=TOP);
        zcyl(l=10, d=28, rounding1=1, rounding2=7, anchor=BOT);
    }
    translate([0,0,10]) screw();
}