metric_screws.scad

Screws, Bolts, and Nuts.

Functions

get_metric_bolt_head_size(size)

Get the bolt head size for a given metric screw diameter.

get_metric_nut_size(size)

Get the nut diameter for a given metric screw diameter.

get_metric_nut_thickness(size)

Get the nut thickness for a given metric screw diameter.

Modules

screw()

Makes a simple threadless screw, useful for making screwholes.

Arg	What it is
screwsize	diameter of threaded part of screw.
screwlen	length of threaded part of screw.
headsize	diameter of the screw head.
headlen	length of the screw head.

Example:

screw(screwsize=3,screwlen=10,headsize=6,headlen=3);

metric_nut()

Makes an unthreaded model of a standard nut for a standard metric screw.

Arg	What it is
size	standard metric screw size in mm. (Default: 3)
hole	include an unthreaded hole in the nut. (Default: true)
center	If true, nut is centered, otherwise, sits on top of XY plane.

Example:

metric_nut(size=8, hole=true);
metric_nut(size=3, hole=false);