Screws threaded

Full functional threads 3D printable

Prerequisites

See instructions here

Adapt the reading to the standard you need

This tutorial applies to all standards. The examples are given for metric coarse standard.

Changes to do in the reading to adapt to other standards are summarized in this table:

• MXC: Metric Coarse standard (International standard)
• MXF: Metric Fine standard (International standard)
• UNC: Unified National Coarse standard (US standard)
• UNF: Unified National Fine standard (US standard)
• BSW: British Standard Whitworth standard (UK standard)
• BSF: British Standard Fine standard standard (UK standard)

Tutorial code	MXC	MXF	UNC	UNF	BSW	BSF
mx-screw.scad	mx-screw.scad	mxf-screw.scad	unc-screw.scad	unf-screw.scad	bsw-screw.scad	bsf-screw.scad
mx-thread.scad	mx-thread.scad	mxf-thread.scad	unc-thread.scad	unf-thread.scad	bsw-thread.scad	bsf-thread.scad
mxBolt	mxBolt	mxfBolt	uncBolt	unfBolt	bswBolt	bsfBolt
mxNut	mxNut	mxfNut	uncNut	unfNut	bswNut	bsfNut
mxThread	mxThread	mxfThread	uncThread	unfThread	bswThread	bsfThread
M6	M6	MF6	UNC1_4	UNF1_4	BSW5_32	BSF5_32

This very simple code shows differences between standards:

• Thread comparison code

Tutorial

Step	Code	Result
Hexagonal nut	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> $fn=50; screw = M6(); mxNutHexagonalThreaded(screw);
Square nut	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> $fn=50; screw = M6(); mxNutSquareThreaded(screw);
Hexagonal bolt	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> // M6 bolt with 10mm thread length $fn=50; screw = M6(); mxBoltHexagonalThreaded(screw,10);
Allen bolt	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> // M6 bolt with 20mm thread length $fn=50; screw = M6(); mxBoltAllenThreaded(screw,20);
Internal Thread alone	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> // M6 bolt with 20mm thread length $fn=50; screw = M6(); mxThreadInternal(screw);
External Thread alone	use <agentscad/mx-screw.scad> use <agentscad/mx-thread.scad> // M6 bolt with 20mm thread length $fn=50; screw = M6(); mxThreadExternal(screw);