Here you can download free 3D models of metric and imperial hex key tools (Allen wrench or Allen key). Hex key tools are simple tools that are used to drive screws and bolts with hexagonal sockets in their heads.

These tools are made of bent hexagonal rod and can be of various standardized sizes. As we have already mentioned, here you can download 3D models of both metric and imperial standard sizes. By size we mean the distance between two opposite (parallel) flat sides of the key. The following sizes are available:

Metric sizes: 0.7mm, 0.9mm, 1.3mm, 1.5mm, 2.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm
Imperial sizes: 0.028’’, 0.035’’, 0.05’’, 1/16’’, 5/64’’, 3/32’’, 7/64’’, 1/8’’, 9/64’’, 5/32’’, 3/16’’, 7/32’’, ¼’’, 5/16’’, 3/8’’, 7/16’’, ½’’, 9/16’’, 5/8’’, ¾’’, 7/8’’, 1’’, 1 ¼’’ and 1 ½’’


3d models of hex key tools
3D model category
3D CAD software used for modeling

FreeCAD (Version 0.19)

Available NURBS and BREP file formats

Only FreeCAD native file format .FCStd

As you can see in the picture, these 3D models are the simplest hex keys that can be bought in the market. There is also a variant with a hexagonal ball at one end which allows the tool to be used at an angle off-axis to the screw. A further variant has a handle similar to screwdrivers. These are 3D models of hex keys of standard sizes, i.e., we have drawn the 3D models based on the dimensions of the world-renowned manufacturer of these tools. It should also be said that we have modeled only metric hex keys that belong to the 1st choice sizes because they are most often used in practice. The 2nd choice sizes hex keys can be drawn very easily by modifying any metric 3D model.

Modeling a hex key is very simple, it is enough to draw two simple sketches and apply the Sweep command. Modeling all other hex keys is very easy as you only need to change a few dimensions on both sketches. By combining your 3D assemblies and our 3D models, you can create useful illustrations for books, assembly instructions, instructions for use, and more. If you are engaged in such jobs, we are sure that our 3D models of hex keys will be useful to you because you don’t have to model them yourself.


Submitted by Ceh Jan