🎨 Product Overview: M2–M5 Aluminum Flat Knurled Thumb Screws – PC Case Hand Grip Bolts (4–10mm Lengths)
Upgrade your PC build, 3D printer, or camera rig with these colorful anodized aluminum knurled thumb screws. Made from 6061 aluminum alloy with a flat, diamond‑knurled head, they provide a secure, non‑slip grip for hand tightening – no tools required. Available in metric sizes M2, M3, M4, and M5, with thread lengths from 4mm to 10mm (measured under the head). Choose from 10 vibrant anodized colors (Wine Red, Pink, Golden, Blue, Sky Blue, Black, Silver, Green, Purple, Orange) to match your style. Perfect for PC case side panels, graphics card brackets, 3D printer bed leveling knobs, camera tripod mounts, and general DIY assembly.
✨ Why These Aluminum Knurled Thumb Screws Are a DIY Essential
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Flat knurled head for tool‑less grip – Diamond knurl pattern provides excellent finger traction for hand tightening and loosening – no screwdriver needed.
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Lightweight 6061 aluminum alloy – Strong yet lightweight, corrosion‑resistant, and anodized for a durable, vibrant finish.
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10 anodized colors available – Wine Red, Pink, Golden, Blue, Sky Blue, Black, Silver, Green, Purple, Orange. Add a custom accent to your project.
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Metric sizes M2, M3, M4, M5 – Covers the most common diameters for PC cases, electronics, 3D printers, and camera accessories.
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Thread lengths from 4mm to 10mm (under head) – Choose the length that fits your panel thickness or assembly depth. Perfect for thin panels (4‑6mm) or thicker brackets (8‑10mm).
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Fully threaded, coarse metric pitch – Standard threads: M2x0.4, M3x0.5, M4x0.7, M5x0.8. Threads run the entire length for maximum grip.
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Brand: GooBetter Fastener – Precision manufacturing with consistent quality. GB standard compliance.
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Wide applications – Assembly / machine tools, camera tripod mounts, bracket shooting, PC cases, 3D printers, and DIY projects.
📏 Technical Specifications – M2–M5 Flat Knurled Thumb Screws
| Thread Size |
Thread Pitch (mm) |
Head Style |
Material |
Available Colors |
Thread Length Range |
| M2 |
0.4 |
Flat knurled |
6061 Aluminium |
10 colors |
4–10mm |
| M3 |
0.5 |
Flat knurled |
6061 Aluminium |
10 colors |
4–10mm |
| M4 |
0.7 |
Flat knurled |
6061 Aluminium |
10 colors |
4–10mm |
| M5 |
0.8 |
Flat knurled |
6061 Aluminium |
10 colors |
4–10mm |
| Product Type |
Flat Knurled Thumb Screws (Hand Grip Bolts) |
| Brand |
GooBetter Fastener |
| Standard |
GB |
| Drive Style |
Hand grip (toolless) |
| Length Measurement |
Under head – from underside of head to tip (head not included) |
| Finish |
Anodized |
| Tolerance |
±0.2mm |
❓ FAQs – Aluminum Knurled Thumb Screws
🔸 Will these screws fit my PC case?
Most PC case side panels, graphics card brackets, and drive bays use M3 or M3.5 threads. M3 is the most common. M2 is used for very small components, M4 for larger brackets, and M5 for heavy‑duty mounts. Check your existing screws – if they are metric, these will fit. The thread lengths (4–10mm) cover standard panel thicknesses.
🔸 How is thread length measured? Which length should I choose?
Thread length is measured from the underside of the flat head to the tip. For standard PC side panels (1‑2mm thick), 4‑6mm is sufficient. For panels with nuts or thicker brackets (3‑5mm), choose 8‑10mm. Measure your material thickness and add 2‑3mm for proper engagement.
🔸 Are these screws fully threaded? What are the thread pitches?
Yes – fully threaded from under the head to the tip. Pitches are standard metric coarse: M2x0.4, M3x0.5, M4x0.7, M5x0.8.
🔸 Will the anodized color fade or wear off?
Anodizing is an electrochemical process that bonds the color to the aluminum surface. It is durable and will not peel like paint. Under normal hand use, the color will remain vibrant for years. Heavy abrasion may wear the finish, but typical thumb screw applications are gentle.
🔸 Can I use these screws with nuts, or are they for tapped holes only?
These are standard machine screws – they work with matching metric nuts (M2–M5) or in pre‑tapped holes. For through‑hole applications, use a nut on the back side. The knurled head is for hand grip only – do not use tools on the knurling.
🔸 Are these screws magnetic? Will they affect my PC components?
Aluminum is non‑magnetic, so these thumb screws will not interfere with hard drives, fans, or other sensitive electronics. They are completely safe for use inside computers and near camera equipment.
