### Create Screws and Nuts with Threads

Source: https://github.com/johk/nutsnbolts/blob/master/README.md

Includes the 'cyl_head_bolt.scad' library to create screws and nuts. Specify 'thread="modeled"' to generate visible threads, which can be slow. Otherwise, the outer/inner diameter is used.

```openscad
include <cyl_head_bolt.scad>;

	screw("M20x100", thread="modeled"); // screw M20x100 with thread
	nut("M20", thread="modeled");       // corresponding nut with thread
				    
screw("M3x12");                     // screw M3x12
```

--------------------------------

### Create a Hole and Nutcatch

Source: https://github.com/johk/nutsnbolts/blob/master/README.md

Demonstrates creating a difference between a cube and various hole and nutcatch features. Use 'nutcatch_parallel', 'hole_through', and 'nutcatch_sidecut' for different hole and catch configurations.

```openscad
difference() {
	translate([-15, -15, 0]) cube([80, 30, 50]);
	rotate([180,0,0]) nutcatch_parallel("M5", clh=0.1);
	translate([0, 0, 50]) hole_through(name="M5", l=50+5, cld=0.1, h=10, hcld=0.4);
	translate([55, 0, 9]) nutcatch_sidecut("M8", l=100, clk=0.1, clh=0.1, clsl=0.1);
}
```

--------------------------------

### Apply Materials and Colors to Nuts

Source: https://github.com/johk/nutsnbolts/blob/master/README.md

Includes the 'materials.scad' library to color parts and document materials. The material number is descriptive and not functionally used by the library. Defaults are provided for common materials.

```openscad
include <materials.scad>;  // this allows you to write stuff like this:

stainless(no="1.4301") nut("M3");

	// which colors the parts in the corresponding color and documents the
	// intended material. The material number isn't used for anything and can be
	// skipped. Sensible defaults are set for stainless/steel/iron.
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.