Can I use files from this site in my company's maintenance manuals?

Does the GrabCAD license allow me to use submissions from this site to make illustrations for my employer's customer or service manuals?
For example, there is a Solidworks file of human hands that I would like to modify and use in product maintenance illustrations in our manuals.
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2 Answers

If your employer is Stratasys or one of the Stratasys Affiliates then yes, otherwise I believe the following sections indicate a no-go on commercial use for the rest of society:

6. USER SUBMISSIONS
If and when you submit, post, upload or otherwise make available Content (such as CAD files) on or through the Site for public viewing ("User Submissions") you hereby grant:
6.1. Stratasys and all Stratasys Affiliates a worldwide, non-exclusive, royalty-free, fully-paid, perpetual, irrevocable, sublicensable (through multiple tiers of sublicensees), assignable, and transferable license to use, reproduce, copy, modify, adapt, arrange, translate, create derivative works of, and publicly display, perform and communicate such User Submissions, for the sole purpose of making available, improving, and/or promoting the Site and/or Site Materials (the "User Submission License"); and
6.2. each user of the Site a worldwide, non-exclusive, royalty-free, fully-paid, perpetual, irrevocable, non-sublicensable, non-assignable, and non-transferable license to use, reproduce, copy, modify, adapt, arrange, translate, and create derivative works of such User Submissions for such user's own benefit and non-commercial, internal use (the "Cross License").

https://grabcad.com/terms

You can also send a message to the model creator asking them if you could use their model in your manuals.