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When you need a fastener you can tighten and release by hand — without reaching for a wrench — standard screws slow you down. Makers, hobbyists, and workshop technicians who frequently adjust panels, enclosures, jigs, or equipment covers need a reliable hand-tightened solution that holds firm without stripping or corroding over time.
These M8 knurled thumb screws feature a stepped aluminium alloy handle with a knurled grip surface, paired with a stainless steel threaded rod. The M8 thread diameter (8mm / ~0.315 in) is paired with shaft lengths ranging from 10mm to 100mm (~0.39 in to ~3.94 in), available in Black anodized or Red anodized finish. Each screw is sold individually or in packs of 2, 3, or 4 pieces.
Ideal for tool-free panel fastening on 3D printer frames, CNC machine guards, electronics enclosures, and DIY workshop fixtures. The aluminium handle keeps weight low while the stainless steel threaded rod resists corrosion in light-duty indoor and semi-outdoor environments — a practical choice for M8 thumb screw applications where repeated hand adjustment is required.
| Thread Size | M8 (8mm) |
|---|---|
| Thread Pitch | 1.25mm (standard metric coarse) |
| Shaft Length Options | 10 / 15 / 20 / 25 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 mm |
| Handle Material | Aluminium alloy (anodized) |
| Thread Rod Material | Stainless steel |
| Colour / Finish | Black anodized / Red anodized |
| Drive Style | Hand-tightened (knurled thumb grip, no tool required) |
| Head Style | Stepped knurled thumb head |
| System of Measurement | Metric |
| Pack Quantity | 1 Pcs / 2 Pcs / 3 Pcs / 4 Pcs (see variant options) |
| Weight per Piece | See variant options |
Measure the total clamping depth — the combined thickness of all materials the screw must pass through — and add clearance for the nut or threaded insert. For example, if your panel stack is 15mm thick and you need 5mm of thread engagement, choose the 20mm or 25mm length. When in doubt, size up slightly to ensure full thread engagement.
These screws use the standard M8 coarse metric thread pitch of 1.25mm. This is the most common M8 pitch and is compatible with standard M8 nuts, threaded inserts, and tapped holes machined to DIN/ISO metric standards.
These are designed for light-to-medium duty hand-tightened applications such as panel retention, enclosure covers, jig fixtures, and equipment guards. The stainless steel threaded rod provides solid thread strength, but because they are hand-tightened (no torque tool), they are not intended for high-load structural joints that require specified torque values. For vibration-prone environments, consider adding a locking nut or thread-locking compound.
The threaded rod is stainless steel, which offers good corrosion resistance in typical indoor and light semi-outdoor environments. It is not rated for continuous immersion or highly corrosive chemical environments. The aluminium handle is anodized, which also provides a protective oxide layer against surface oxidation.
Both colours are anodized aluminium and are functionally identical — same thread, same material, same dimensions. The colour difference is purely aesthetic and practical: many builders use different colours to colour-code fastener locations (e.g., red for quick-release panels, black for standard retention) or to match their build's colour scheme.
Yes. The M8 x 1.25mm thread is fully compatible with standard M8 hex nuts, flange nuts, wing nuts, and threaded inserts (brass, steel, or aluminium) machined to standard metric tolerances. Always verify the thread engagement depth matches your chosen shaft length.
Select the pack quantity that matches the number of fastener points in your project. Single-piece packs are ideal for replacement or testing a fit before committing. Multi-piece packs (2–4 Pcs) offer a lower per-unit cost and are suited for enclosures or panels with multiple thumb screw positions. Check the price-per-piece across pack sizes to find the most economical option for your quantity.
