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When you're mid-project and reaching for a screwdriver feels like one step too many, these knurled thumb screws are the fix. Designed for makers, electronics hobbyists, and DIY enthusiasts who need fast, repeatable hand-tightening without tools, these M6 x 20mm knob bolts let you secure panels, enclosures, and assemblies in seconds.
Each screw is machined from aluminum alloy with a knurled round head for a confident grip. The M6 metric thread runs the full 20mm (approx. 0.79 in) shank length. Available in 10 anodized colors — Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, and Orange — in quantities from 1 to 50 pieces per order.
Ideal for securing computer case side panels, 3D printer frame covers, electronic enclosure lids, and DIY aluminum extrusion builds. Long-tail use cases include hand-tighten M6 thumb screws for PC modding, anodized aluminum knob bolts for maker projects, and tool-free fasteners for aluminum profile assemblies.
The knurled round head provides a secure finger grip for fast, tool-free tightening and loosening — ideal for panels and covers you access frequently.
Choose from Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, or Orange to color-code assemblies or match your build aesthetic.
Lightweight yet rigid aluminum alloy body resists corrosion and keeps weight low — a practical choice for electronics enclosures and portable DIY builds.
Standard M6 coarse thread (1.0mm pitch) ensures compatibility with the widest range of M6-tapped holes, nuts, and threaded inserts.
Order exactly what you need: 1, 5, 10, 20, or 50 pieces per pack. Bulk packs offer better per-unit value for larger builds or restocking.
The anodized surface layer adds scratch resistance and color stability, keeping your fasteners looking clean even after repeated use.
| Thread Size | M6 |
|---|---|
| Thread Pitch | 1.0mm (Coarse) |
| Shank Length | 20mm (approx. 0.79 in) |
| Head Style | Round Knurled Head |
| Drive Style | Hand-tighten (no tool required) |
| Material | Aluminum Alloy |
| Finish | Anodized |
| Head Diameter | See variant options |
| Head Height | See variant options |
| Available Colors | Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, Orange |
| Available Quantities | 1pcs, 5pcs, 10pcs, 20pcs, 50pcs |
| System of Measurement | Metric |
These screws are M6 x 20mm — meaning the thread diameter is 6mm and the shank length is 20mm (approx. 0.79 in). Confirm your tapped hole or nut is M6 with a 1.0mm coarse pitch before ordering. If your panel stack is thinner than 20mm, the screw will protrude; if thicker, it may not fully engage — measure your clearance first.
Aluminum alloy thumb screws are well-suited for light-duty panel retention, enclosure covers, and access doors where hand-tightening torque is sufficient. They are not recommended for high-vibration structural joints or load-bearing applications where steel fasteners and torque tools are required.
Yes. The anodized layer bonds to the aluminum surface, providing meaningful resistance to oxidation, light scratching, and everyday handling wear. For outdoor or high-humidity environments, anodized aluminum performs well, though prolonged exposure to salt spray or harsh chemicals may degrade the finish over time.
Yes. The M6 x 1.0mm coarse thread is the global standard for M6 fasteners and is compatible with M6 hex nuts, nylon lock nuts, T-nuts for aluminum extrusions (e.g., 2020/3030 profiles), and M6 threaded inserts in acrylic, wood, or metal panels.
All 10 color variants (Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, Orange) share identical M6 x 20mm dimensions — only the anodized color differs. Choose based on your build's color scheme or use different colors to visually distinguish fastener locations (e.g., red for power-related panels, black for standard covers).
Most PC side panels and small enclosures use 2–4 thumb screws per panel. A 5-pack covers a single panel with a spare; a 10-pack suits a full enclosure with multiple access points. For workshop stock or multi-unit builds, the 20-pack or 50-pack offers better per-unit value.
Yes, provided you use an M6 T-nut or drop-in nut in the extrusion slot. The M6 x 20mm shank length works well with standard panel thicknesses (typically 3–8mm) mounted to extrusion frames. Ensure the T-nut is rated for M6 and the combined panel + nut engagement gives adequate thread contact.
