m3 nut openscad

// Tight fit parameters
nut_flat = 5.7; // 5.7mm for a tight press-fit (M3 hardware)
nut_depth = 2.4; // Standard M3 nut thickness
bolt_dia = 3.2; // Tighter clearance for the bolt
plate_height = 3.0; // Thin base for placing on top of parts

difference() {
// 1. THE BASE
cube([12, 12, plate_height], center=true);

// 2. THE NUT CUTOUT (Hex Hole)
// Move to top surface and sink it
translate([0, 0, (plate_height / 2) - nut_depth])
cylinder(d = nut_flat / cos(30), h = nut_depth + 0.1, $fn = 6);

// 3. THE BOLT HOLE
cylinder(d = bolt_dia, h = plate_height + 2, $fn = 32, center = true);
}