Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When you need a fastener you can tighten and release repeatedly without reaching for a screwdriver, standard hex bolts become a daily frustration. DIYers, makers, and equipment builders who work with access panels, enclosures, jigs, and fixtures need a knurled thumb screw that stays put under vibration yet releases instantly by hand — and that's exactly what these M6x25mm knurled thumb screws deliver.
Each screw is machined from aluminum alloy with a round knurled head for a secure finger grip. The thread is M6 metric with a 25 mm (approx. 0.98 in) shank length. The knurled head diameter is typically 18–22 mm (0.71–0.87 in), and the overall assembled length is approximately 35–40 mm (1.38–1.57 in) depending on head profile. Available in 10 anodized colors — Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, and Orange — so you can color-code assemblies or match your build aesthetic.
Typical use cases include securing 3D printer bed leveling knobs, rack-mount equipment panels, and custom enclosure lids where tool-free access is essential. They also work well as adjustment knobs on woodworking jigs, photography rigs, and DIY CNC fixtures — anywhere a hand-tighten knurled bolt replaces a conventional hex fastener for faster iteration.
| Thread Size | M6 |
|---|---|
| Thread Pitch | 1.0 mm (standard metric coarse) |
| Shank Length | 25 mm (approx. 0.98 in) |
| Head Style | Round knurled head |
| Head Diameter | Typically 18–22 mm (0.71–0.87 in) |
| Overall Length | Typically 35–40 mm (1.38–1.57 in) |
| Material | Aluminum alloy |
| Finish | Anodized (color per variant) |
| System of Measurement | Metric |
| Available Colors | Red, Pink, Gold, Dark Blue, Light Blue, Black, Silver, Green, Purple, Orange |
| Available Pack Sizes | 1 pcs / 5 pcs / 10 pcs / 20 pcs / 50 pcs |
| Drive Style | Hand-tighten (no drive tool required) |
| Weight per Piece | See variant options |
These screws use a standard M6 metric thread with a 1.0 mm coarse pitch. They will fit any M6-tapped hole or M6 nut that uses the standard coarse pitch. If your application uses a fine-pitch M6 thread, please confirm compatibility before ordering.
Yes — the deep knurled pattern on the round head is designed specifically for finger-tightening. They are intended for applications where hand torque is sufficient, such as access panels, enclosure lids, jigs, and adjustment knobs. They are not designed for high-torque structural connections that require a wrench.
The aluminum alloy base material offers natural corrosion resistance, and the anodized finish adds an additional protective layer. They are suitable for indoor use and light-duty outdoor or workshop environments. For prolonged exposure to harsh chemicals or saltwater, a stainless steel thumb screw would be more appropriate.
Anodizing is an electrochemical process that integrates the color into the surface of the aluminum rather than sitting on top like paint. Under normal hand-tighten use, the finish holds up well to repeated cycles. Heavy abrasion or contact with sharp metal edges may cause surface wear over time.
They work well in any application requiring frequent tool-free access: 3D printer bed leveling knobs, rack-mount equipment panels, custom enclosure lids, woodworking jig stops, photography rig adjustments, DIY CNC fixtures, and electronics project boxes. They are not recommended for load-bearing structural joints.
The 1 pcs option is ideal for testing fit and finish before committing to a larger order. The 5 or 10 pcs packs suit most single-project builds. The 20 or 50 pcs packs offer better per-unit value for production runs, batch builds, or restocking a workshop supply. All pack sizes are available in every color.
Yes. Because they use a standard M6 coarse thread (1.0 mm pitch), they are compatible with any M6 hex nut, flange nut, wing nut, or M6 threaded insert that uses the same pitch. Always verify the thread pitch of your existing hardware matches before ordering.
Absolutely. With 10 distinct anodized colors available, these thumb screws are well-suited for color-coding panels, zones, or adjustment points on a machine or fixture. For example, you might use Red for emergency-access panels and Black for standard service covers on the same enclosure.
