T-Slot 4040 Nut Insert Set (M3/M4/M5)
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Universal nut inserts for 4040 T-slot profiles — fits M3, M4, and M5 nuts, strong friction-fit design.
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Public Domain
BOM: Printed with ROSA3D High Speed PLA Signal Violet
This model set includes three 3D-printable nut inserts designed for 40×40 T-slot aluminum extrusion profiles.
Each insert provides a clean, reliable way to mount M3, M4, or M5 nuts directly into the profile’s groove, allowing secure bolt fastening without metal T-nuts or custom hardware.
Features:
🔩 Three versions: M3 / M4 / M5 (included in one download)
⚙ Friction-fit design — holds firmly in place but slides easily for alignment
🧱 Optimized geometry for most common T-slot 4040 systems (Bosch, Item, Motedis, etc.)
🖨 Fully printable flat — no supports required
🔧 Perfect for modular frames, CNCs, 3D printers, enclosures, and robotics projects
Depending on your extrusion brand or printer tolerance, you may fine-tune fit by ±0.1 mm for the best result.
A small amount of sanding or light lubrication may help for tighter profiles.