Fittings and adapters
Threaded Front Cylinder to Vertical Picatinny Rail Adapter
- Bounding box
- 24.7 × 30.2 × 40.0 mm
- Engine
- Precision B-rep
- Parameters
- 12
- Published
- October 4, 2026
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Free to download and use. See the terms.
The prompt
A compact, one-piece aluminium adapter with a cylindrical front section measuring 30 mm in diameter and 12.7 mm in length, with a specified thread of 1-3/16″–16 UN (1.1875″ nominal major diameter, 16 threads per inch). The rear features a vertical Picatinny-style rail. The body should be as compact as possible, with chamfered edges and a black anodised finish.
Parameters
| Name | Value | Range |
|---|---|---|
| Front cylinder / thread major diameter | 30.16 mm | 25 – 40 |
| Front cylinder length | 12.7 mm | 5 – 50 |
| Thread pitch (16 TPI) | 1.59 mm | 0.5 – 3 |
| Thread groove depth | 0.87 mm | 0.2 – 2 |
| Picatinny rail width | 21.2 mm | 15 – 30 |
| Vertical rail length | 40 mm | 20 – 80 |
| Rail depth along cylinder axis | 12 mm | 6 – 30 |
| Rail slot width | 5.23 mm | 3 – 8 |
| Rail slot depth | 3 mm | 1 – 6 |
| Rail slot spacing | 10 mm | 5 – 20 |
| Rail slot count | 3 | 1 – 10 |
| Edge chamfer size | 0.4 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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