How to draw hexagonal nut
In engineering drawing and mechanical design, hexagonal nuts are one of the most common standard parts. Mastering its drawing method not only helps to understand the mechanical structure, but is also an essential skill for CAD beginners. This article will combine the hot topics and hot content on the Internet in the past 10 days to give a structured explanation of the drawing steps of hexagonal nuts, and attach relevant data references.
1. Basic knowledge of hexagonal nuts

The specifications of hexagonal nuts are determined by the thread diameter (D) and the width across flats (S). The following is a comparison table of common specifications:
| Thread specifications | Width across sides(S) | Thickness(H) |
|---|---|---|
| M3 | 5.5mm | 2.4mm |
| M4 | 7mm | 3.2mm |
| M5 | 8mm | 4.7mm |
| M6 | 10mm | 5.2mm |
2. Steps to hand-draw hexagonal nuts
1.Draw a regular hexagon: Based on the width S of the opposite side, use a compass as an auxiliary circle and divide it into six equal parts.
2.add thickness: Determine the thickness H according to the specification table, and draw the upper and lower hexagons
3.chamfering: 30° chamfer line connects the corresponding vertices of the upper and lower hexagons
4.Draw threaded holes: The inner diameter is calculated according to 0.85D (D is the nominal diameter of the thread)
3. Key points of CAD software drawing
According to recent popular CAD tutorials, the differences in mainstream software operations are as follows:
| Software | key commands | Popular Tips Tags |
|---|---|---|
| AutoCAD | POLYGON→EXTRUDE→SUBTRACT | #parametric modeling #dynamic block |
| SolidWorks | Shaped Hole Wizard→Polygon Extrude | #Feature library call #Smart size |
| Fusion 360 | Create Thread Feature→Hexagonal Sketch | #cloudcollaboration #generativedesign |
4. Answers to recent hot questions
1.Q: Why is my hex nut rendering unrealistic?
A: According to the latest Blender tutorial, please note: metal roughness 0.3-0.5, adding micro-scratch map, ambient light occlusion settings
2.Q: How to quickly draw a nut group?
A: Recommended popular plug-ins in 2024: AutoCAD’s Mechanical Toolset, SolidWorks’ Toolbox library
3.Q: How to deal with non-standard nuts?
A: The recent popular GitHub project "Fast-Nut" provides an open source parametric model generator
5. Advanced skills
According to the popular videos in the mechanical area of Bilibili in the past 7 days, the following advanced techniques are recommended:
| skill type | Implementation method | Application scenarios |
|---|---|---|
| Lock nut drawing | Add nylon ring/metal fin structure | Vibration environment assembly |
| animation display | Thread fit motion simulation | Teaching demonstration |
| 3D printing optimization | Grid weight reduction structure | rapid prototyping |
6. Recommended learning resources
1. Zhihu hot post: "Looking at Mechanical Design Thinking from the Hexagonal Nut" with a reading volume of 150,000+
2. Popular Douyin topic: #nutdrawingchallenge with 8.2 million views
3. The newly launched "Complete Manual of Standard Parts Drawing" on WeChat Reading has a score of 9.2
Through the above structured content, I believe you have mastered the essentials of drawing hexagonal nuts. Whether it is traditional manual drawing or modern CAD design, if you understand the basic principles and use the tools together, you can efficiently complete professional-level nut drawing. It is recommended to collect the specification parameter table of this article and refer to it at any time.
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