Fittings and adapters
Threaded Step-Shaft Stub/Nipple
- Bounding box
- 24.0 × 22.0 × 41.5 mm
- Engine
- Precision B-rep
- Parameters
- 19
- Published
- November 7, 2026
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The prompt
Subject: 3D model of a rotation symmetric step-shaft fitting (stub/nipple) with axial bored hole and external/internal threads. Dimensions and Geometry Details: * Total length: 44 mm. * Middle Section (Wrench Flats): - This section is a CYLINDER with an outer diameter of 24 mm. - It has TWO flat parallel surfaces (machined wrench flats) on opposite sides. - The distance between these two flat faces is exactly 22 mm. - It is NOT a hexagon (six-sided nut). It is a circle with two sliced sides. * Left Section (Nose): - Starts with a conical chamfer at a 70-degree included angle down to a tip diameter of 11 mm. - Followed by a cylindrical step of diameter 16 mm with external thread M18x1.5. - Ends with a thread relief groove with a radius of R2.5 (width 4.6 mm). * Right Section (Stem): - A cylindrical step with an outer diameter of 16 mm and a length of 15 mm. - Features an external metric thread M16x1. * Internal Bore: - Longitudinal through-hole along the central axis. - Smooth bore diameter is 14.5 mm. - Right side features an internal metric thread M16x1.
Parameters
| Name | Value | Range |
|---|---|---|
| Total Length | 44 mm | 40 – 60 |
| Right Stem Length | 15 mm | 8 – 15 |
| Wrench-Flat Section Length | 15 mm | 8 – 15 |
| Wrench Section OD | 24 mm | 18 – 32 |
| Distance Across Flats | 22 mm | 12 – 23.5 |
| Nose Tip Diameter | 11 mm | 5 – 15 |
| Nose Included Chamfer Angle | 70 deg | 30 – 120 |
| Left Thread Major Diameter | 18 mm | 14 – 22 |
| Left Thread Pitch | 1.5 mm | 0.5 – 3 |
| Left Thread Groove Depth | 0.9 mm | 0.2 – 1.5 |
| Relief Groove Width | 4.6 mm | 1 – 8 |
| Relief Groove Diameter | 15.8 mm | 10 – 18.5 |
| Relief Groove Radius | 2.5 mm | 0.2 – 3 |
| Right Stem OD | 16 mm | 16 – 24 |
| Right External Thread Pitch | 1 mm | 0.4 – 3 |
| Right External Thread Groove Depth | 0.4 mm | 0.1 – 0.6 |
| Smooth Through Bore Diameter | 14.5 mm | 4 – 14.5 |
| Internal Thread Major Diameter | 15.6 mm | 15 – 15.8 |
| Internal Thread Pitch | 1 mm | 0.4 – 3 |
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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