Brackets and mounts
Plastic Clamping Knob with Coarse Thread
- Bounding box
- 40.0 × 40.0 × 37.0 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- August 20, 2026
Download
Free to download and use. See the terms.
The prompt
Modify the existing plastic clamping knob. Keep the current knob shape, finger grooves, shoulder, and internal reinforcing ribs. Replace the smooth shaft with an integrated coarse plastic threaded shaft. The shaft should: - Extend 20 mm below the shoulder. - Use large, deep helical threads suitable for injection-molded plastic. - Be designed for repeated hand tightening. - Blend smoothly into the shoulder with a fillet. Do not change the knob diameter. Do not remove the reinforcing ribs. Do not create a smooth pin. Generate a functional all-plastic clamping screw for a modular storage organizer.
Parameters
| Name | Value | Range |
|---|---|---|
| Knob Outer Diameter | 40 mm | 20 – 80 |
| Knob Height | 15 mm | 8 – 40 |
| Groove Depth | 5 mm | 2 – 15 |
| Groove Width | 4 mm | 2 – 10 |
| Groove Count | 4 | 2 – 12 |
| Hub Diameter | 20 mm | 10 – 50 |
| Hub Height | 10 mm | 5 – 30 |
| Rib Width | 3 mm | 1 – 8 |
| Rib Thickness | 2 mm | 1 – 6 |
| Rib Count | 6 | 2 – 12 |
| Shaft Diameter | 8 mm | 4 – 20 |
| Shaft Length (below shoulder) | 20 mm | 10 – 50 |
| Thread Pitch | 2 mm | 1 – 4 |
| Thread Depth Ratio (×pitch) | 0.7 | 0.5 – 0.9 |
| Shoulder Diameter | 12 mm | 8 – 30 |
| Shoulder Height | 2 mm | 1 – 5 |
| Shaft-Shoulder Fillet Radius | 0.5 mm | 0.2 – 2 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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