Fasterner craft command icons are located beside the scripts and add-ins command icons.

When you click on any of the three fastener icons you go straight and select the nominal diameter of the screw

Select the length of the screw.

There is a built-in function that prevents you from selecting a screw length that is not DIN standard length for a particular diameter.

You can as well select a custom length this allows you to create a screw length of your choice that is within the range, you can input your custom length in any unit of your choice. please note that whatever values you input for the custom length are saved and for the first time you select custom length the default value is automatically selected you can change it by closing the command and running the command again.

The input function 'distance_from_origin' enables you to move the screw away from the origin to a perfect view position where you can be able to create an array for the screws and assemble the screws to the point where it is needed in the main component. so before selecting the screw, calculate the distance away from the origin that will be suitable for you to array and assemble the screw.

You can input any unit of your choice for the  'distance_from_origin' 

Please note that for the shoulder screw the diameter you select is the thread diameter and not the shoulder diameter

Please note that for the flat-head screw, the length you select is the total length of the screw from the top of the head to the bottom

Install:
The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. Or, simply double-click the downloaded installer to install the app/plugin.

Uninstall:
You can unload the add-in without uninstalling it by clicking the "Stop" button when the add-in is selected in the list box on the "Add-Ins" tab of the "Scripts and Add-Ins" dialog.
Unchecking "Run on Startup" causes the add-in not to be loaded in future sessions of Autodesk® Fusion®.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button.
Or, you can uninstall it from 'Control Panel/Programs and Features' (Windows 10/11), just as you would uninstall any other application from your system.