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When you need to adjust panels, covers, or fixtures repeatedly without reaching for a screwdriver, standard fasteners slow you down. These M6 knurled thumb screws with collar are designed for engineers, makers, and workshop users who demand fast, hand-tightened clamping with a secure collar stop — no tools required, no stripped heads.
Each screw features an aluminium alloy body with an anodic oxidation finish, available in Red, Black, or Silver. The knurled cylindrical handle comes in two diameters — 12 mm (0.47 in) and 20 mm (0.79 in) — giving you a choice between compact clearance and maximum grip torque. Thread length ranges from 10 mm to 60 mm (0.39 in to 2.36 in), covering a wide range of panel thicknesses and stack-up depths.
Typical applications include 3D printer frame assemblies requiring frequent M6 knurled thumb screw adjustments, CNC enclosure panels with hand-tightened M6 collar screws, electronics rack covers using aluminium anodized thumb screws for tool-free access, and DIY jig fixtures where repeatable clamping with M6 thumb knobs is essential.
The knurled cylindrical handle provides enough grip surface to tighten and loosen by hand, eliminating the need for a screwdriver in frequent-access applications.
The aluminium body is treated with anodic oxidation, forming a hard, corrosion-resistant surface layer that also provides the Red, Black, or Silver colour options.
Available from 10 mm to 60 mm thread length in 5 mm increments, accommodating thin panels through to deep stack assemblies without needing multiple fastener types.
The integrated collar acts as a positive stop, preventing over-insertion and providing a consistent clamping depth — useful for repeatable fixture setups.
Red, Black, and Silver finishes allow colour-coding of access points or matching panel aesthetics in electronics enclosures, instrument cases, and workshop jigs.
Available in 1, 2, 5, and 10-piece packs so you can order exactly what your project needs — from a single replacement to a full batch for production fixtures.
| Thread Diameter | M6 |
|---|---|
| Thread Pitch | 1.0 mm (standard metric coarse) |
| Thread Length | 10 mm – 60 mm (0.39 in – 2.36 in), in 5 mm steps |
| Handle Diameter | 12 mm (0.47 in) or 20 mm (0.79 in) |
| Head / Handle Style | Knurled cylindrical with collar (high type) |
| Material | Aluminium alloy |
| Surface Finish | Anodic oxidation |
| Available Colours | Red, Black, Silver |
| Drive Style | Hand-tightened (no tool required) |
| System of Measurement | Metric |
| Pack Quantity | See variant options |
| Weight per piece | See variant options |
Measure the total thickness of the material(s) you are clamping, then add 3–5 mm for thread engagement beyond the panel. For example, if your panel stack is 15 mm thick, choose the M6 x 20 mm variant. The collar will sit flush against the surface and act as a depth stop.
The 12 mm handle is more compact and suits applications where clearance around the fastener is limited, such as tight enclosure panels. The 20 mm handle provides a larger grip surface, making it easier to apply more torque by hand — useful for thicker panels or where a more secure clamp is needed.
These screws are designed for hand-tightened clamping in light-duty applications such as access panels, instrument covers, jig fixtures, and 3D printer frames. They are not intended for high-load structural joints or applications requiring torque-specified fastening. For structural use, a standard hex bolt with a torque wrench is recommended.
Anodic oxidation creates a hard aluminium oxide layer that provides good resistance to moisture and mild corrosion in typical indoor workshop or electronics environments. For outdoor or marine exposure, additional protection or a stainless steel fastener would be more appropriate.
Yes. These screws use standard M6 × 1.0 mm metric coarse thread, which is compatible with any M6 tapped hole, threaded insert, or hex nut conforming to ISO metric standards. No special adapters are required.
Red is commonly used to mark critical access points or emergency-release panels. Black blends into dark enclosures and gives a clean, professional appearance. Silver matches natural aluminium or brushed metal panels. All three colours are produced by the same anodic oxidation process and have equivalent mechanical properties.
Yes — M6 knurled thumb screws are a popular choice for 3D printer frame panels and CNC enclosure doors because they allow tool-free access for maintenance. The collar design ensures consistent panel gap and prevents the screw from being inserted too far into the frame extrusion.
