💻 M2.5 x 15mm Aluminium Knurled Thumb Screw – Flat Head Hand Grip for PC Cases & Electronics (Anodised Colours)
You’re building a custom PC, repairing a laptop, or assembling a model – and you need a thumbscrew that’s easy to turn by hand, looks great, and won’t add extra weight. This M2.5 x 15mm aluminium knurled thumb screw is exactly what you need. The flat head sits flush against panels, while the fine mesh knurling gives you a secure, non‑slip grip – no tools required. Made from lightweight 6061 aluminium with an anodised finish, it’s corrosion‑resistant and available in a range of colours to match your build. Perfect for computer cases, electronic enclosures, model making, and any project where a hand‑tightened fastener adds both function and style.
✨ Key Features – M2.5 x 15mm Aluminium Knurled Thumb Screw
- 🔘 Flat knurled head – Low‑profile design with fine mesh knurling for excellent fingertip grip – tighten by hand, no tools needed.
- ⚖️ Lightweight 6061 aluminium – About 1/3 the weight of steel, non‑magnetic, and thermally conductive.
- 🎨 Anodised colour options – Available in multiple colours (e.g., black, silver, red, blue, gold) – add a custom accent to your build.
- 🛡️ Corrosion & wear resistant – Anodised finish protects against oxidation and scratches, keeping the screw looking fresh.
- 📏 M2.5 metric thread (2.5mm diameter, 0.45mm pitch) – Standard size for PC cases, small electronics, and model making.
- 📐 15mm thread length (under head) – Fully threaded for maximum grip in tapped holes or with an M2.5 nut.
- 🔧 Versatile use – Computer cases, side panels, electronic enclosures, 3D printers, RC models, and decorative projects.
📏 Specifications – M2.5 x 15mm Aluminium Knurled Thumb Screw
| Thread Diameter (M) |
Thread Pitch (mm) |
Thread Length (mm, under head) * |
Head Style |
Head Diameter (approx.) |
Head Height (approx.) |
Material / Finish |
| M2.5 |
0.45 |
15 mm |
Flat knurled (mesh pattern) |
~7‑9 mm |
~3‑4 mm |
6061 aluminium / Anodised |
* Length measured from underside of head to tip. Fully threaded. Colour options available – contact us or select from dropdown.
🛠️ Perfect for Computer Modding & Small Electronics
| Application |
Typical Use |
| Computer cases |
Side panel thumbscrews, radiator brackets, drive bay fasteners, PSU mounts |
| Electronic enclosures |
Battery compartments, PCB covers, test equipment knobs |
| 3D printers & CNC |
Bed leveling knobs, spool holders, enclosure thumbscrews |
| Model making & RC |
Body mounts, adjustable links, tool‑less fasteners |
| Decorative projects |
Furniture accents, custom lighting, display panels |
❓ Frequently Asked Questions – M2.5 Aluminium Thumb Screw
1. How do I measure the length of this thumb screw?
The length (15mm) is measured from the underside of the flat head (where the knurling meets the shaft) to the tip of the threaded stud. The head itself is NOT included. This 15mm thread is ideal for panels up to ~12mm thick when used with a nut, or for deeper tapped holes.
2. Is the screw fully threaded? Can I use it with a nut?
Yes – it is fully threaded from under the head to the tip. If you need to fasten through a plain hole, use a standard M2.5 metric nut (0.45mm pitch). For pre‑tapped M2.5 holes, no nut is needed.
3. What colours are available? Will the colour match the photo?
We offer a range of anodised colours (black, silver, red, blue, gold, green, etc.). Actual colour may vary slightly between batches or due to monitor calibration – this is normal for anodised finishes. Please contact us for specific colour availability.
4. Will the aluminium thumb screw rust? Can I use it outdoors?
Aluminium naturally forms a protective oxide layer, and anodising adds extra corrosion resistance. It is suitable for indoor and light outdoor use. For continuous saltwater or harsh chemical environments, we recommend stainless steel thumb screws.
5. Is the flat head designed to sit flush with the surface?
Yes – the flat head sits nearly flush on the material surface. Unlike a countersunk head, it does not require a tapered hole. It provides a low profile while still offering a wide bearing area.
6. Can I get other lengths or custom colours?
Yes – we offer custom lengths and a wide range of anodised colours. Please contact us with your requirements.
