—Download
Download the free version.
You download the free (basic) version of screwit3D. It runs right away, without an account or a key. The full version is not a separate download: you buy a licence, receive a key by e-mail, and paste it into the extension — that unlocks everything in the package you already have.
Step 1 · free
Download and install
The package below is the free version. Install it in SketchUp and try it on your own models — no account, no card.
Step 2 · when you need more
Buy a licence
After payment you receive a licence key by e-mail. You do not download anything new.
Step 3 · full version
Paste the key
In the extension open ⚙ Settings, paste the key into Activation code and press Activate. The same installation becomes the full version.
Latest version
1.3.4
No more freezes: More segments and deleting bolts — Fixed SketchUp freezing in “More segments”. Hovering over a circle could send the part analysis into an endless loop and SketchUp froze until force-quit; it was enough for the part to sit at a certain height or have a certain diameter. The analysis now always finishes. Deleting bolts no longer freezes SketchUp. When several joints were deleted at once (Delete key or “Delete joint and holes”), the edit window recalculated after every single joint — minutes in a large model. It now refreshes once, when the deletion is done. Healing a thread in a part erases its faces in one go, so it is faster. Includes 1.3.3: the question “How many parts to join?” when more parts lie on the axis than the joint type takes.
Installed in a minute
- Download the .rbz package.
- In SketchUp open Extensions → Extension Manager → Install Extension and pick the file.
- Restart SketchUp and open Extensions → screwit3D. It runs as the free version right away.
- Bought a licence? Open ⚙ Settings, paste the key from the e-mail into Activation code and press Activate.
01Free version
What you get without a key.
- Sizes ISO M4 and M12, ASME #8 and 1/2", and 3D print (SI3DP) S6 and S12 — with every head, drive and joint style. Wood screws the same: Ø4 and Ø12, #8 and 1/2", plus the 7 mm confirmat.
- Up to 3 of each kind at a time in a model — bolt joints, wood screws, 3D-print joints, rivet nuts, inserts, end caps, holes and stand-alone parts. The panel shows how many are left; deleting one frees its slot.
- Printed bolts, nuts and washers as stand-alone parts, in S6 and S12.
- Joints already in a model stay editable — yours or a colleague's, in any size. They just can't be changed to a locked size.
- Every tool — drilling through every wall, sections, the joint editor and the bill of materials.
Full version
Perpetual licence
Every size in ISO, ASME and SI3DP, no limit on the number of joints, and all 1.x updates. The key unlocks the package you already have.
Buy screwit3D Compare free and full02Requirements
What you need.
- SketchUp
- 2019 – 2027 · tested on 2025, 2026 and 2027
- System
- macOS · Windows
- Language
- English, German, Spanish or Czech · millimetres or inches
- Internet
- Only to activate a licence and to check for updates. Your models never leave your computer.
- Updates
- The extension tells you when a new version is out and installs it in one click.