🎨 M3 Aluminium Knurled Thumb Screws – PC Case Hand Grip Bolts (Head Ø7×5 or Ø5×5, Anodised Finish)
You’ve spent hours on your PC build, and the last thing you want is a dull, mismatched thumbscrew spoiling the look. These M3 aluminium knurled thumb screws are made for modders who care about details. Choose between a larger 7mm diameter head or a compact 5mm head – both with a flat profile and fine diamond knurling for a secure fingertip grip. Machined from 6061 aluminium and anodised in multiple colours, they’re lightweight, corrosion‑resistant, and perfect for tool‑less fastening on side panels, radiators, or drive bays. Fully threaded, with a 5mm stud length (under head). Available in various colours – select from dropdown.
✨ Key Features – M3 Aluminium Knurled Thumb Screws for PC Cases
- 🔘 Two head size options – Choose Ø7×5 (larger grip area) or Ø5×5 (low profile for tight spaces).
- 🎨 Anodised aluminium finish – Available in a range of colours (black, red, blue, gold, etc.). Adds a custom touch to your build.
- ⚖️ Lightweight 6061 aluminium – About 1/3 the weight of steel. Non‑magnetic and thermally conductive.
- 🛡️ Corrosion‑resistant – Anodising protects against oxidation and wear, keeping screws looking fresh.
- 📐
Tool‑less hand grip – Fine diamond knurling provides excellent fingertip control – no screwdrivers needed.
- 📏 M3 metric thread (3mm diameter, 0.5mm pitch) – Standard size for PC cases, fans, and small electronics.
- 📐 5mm fully threaded stud (under head) – Ideal for thin panels and shallow threaded holes. Fully threaded for maximum grip.
📏 Specifications – M3 Aluminium Knurled Thumb Screws
| Thread Diameter (M) |
Thread Pitch (mm) |
Head Option |
Head Diameter (mm) |
Head Height (mm) |
Stud Length (mm, under head) * |
Material / Finish |
| M3 |
0.5 |
Flat knurled (Type A) |
7 |
5 |
5 mm |
6061 aluminium / Anodised |
| M3 |
0.5 |
Flat knurled (Type B) |
5 |
5 |
* Length measured from underside of head to tip. Fully threaded. Colour availability may vary – select from dropdown. Colour may differ slightly between natural light and indoor lighting.
🛠️ Perfect for PC Modding & Small Electronics
| Application |
Typical Use |
| Computer case |
Side panel thumbscrews, radiator brackets, PSU mounts, drive bay fasteners |
| 3D printers |
Bed leveling knobs, spool holders, enclosure thumbscrews |
| Small electronics |
Battery compartments, PCB covers, test equipment knobs |
| RC models & hobby |
Body mounts, battery covers, adjustable links |
❓ Frequently Asked Questions – M3 Aluminium Thumb Screws
1. How do I measure the length of these thumb screws?
The length (5mm) is measured from the underside of the head (where the knurling meets the shaft) to the tip of the threaded stud. The head itself is NOT included. This 5mm stud is perfect for PC side panels (typically 1‑2mm thick with a threaded boss).
2. Which head size should I choose – 7mm or 5mm?
The 7mm head offers a larger gripping surface, making it easier to turn by hand. The 5mm head is lower profile – ideal for tight spaces where a larger knob would interfere. Both have the same thread and stud length.
3. Are these screws fully threaded? Can I use them with a nut?
Yes – fully threaded from under the head to the tip. If you need to fasten through a plain hole, use an M3 metric nut (0.5mm pitch). For pre‑tapped M3 holes (common in PC cases), no nut is needed.
4. Will the anodised colour fade or scratch easily?
Anodising is a durable electrochemical finish that bonds to the aluminium. It resists scratches and fading far better than paint. Normal hand use will not remove the colour.
5. Can I use these screws outdoors? Will they rust?
Aluminium naturally forms a protective oxide layer, and anodising adds extra corrosion resistance. They are suitable for indoor and light outdoor use. For continuous saltwater or harsh chemical environments, choose stainless steel thumb screws.
6. What colours are available? The photo shows a certain colour – will mine match exactly?
We offer a range of anodised colours (black, silver, red, blue, gold, green, etc.). Please note that the actual colour may vary slightly between natural sunshine and indoor lighting – this is normal for anodised finishes.
