Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When you're mid-project and need to lock down a jig, fixture, or panel without reaching for a wrench, a poorly designed fastener wastes time and strips threads. These M8 M10 aluminum star hand knob thumb screws are built for woodworkers, machinists, and DIY builders who need fast, repeatable hand-tightened clamping in their workshop setups.
Each set consists of an anodized aluminum four-prong clamp knob paired with a stainless steel threaded bolt. Thread sizes are M8 (8mm / 0.31 in) and M10 (10mm / 0.39 in), with shank lengths ranging from 10mm to 60mm (0.39 in to 2.36 in, excluding head). Available in Silver, Black, Burgundy, and Royal Blue anodized finishes.
Typical applications include securing fence stops on router tables, clamping workholding fixtures on drill press tables, adjusting T-slot jig components, and locking panels on aluminum extrusion frames — all without tools. Long-tail use cases include CNC spoilboard clamping, photography rig adjustment knobs, and 3D printer enclosure latches.
Four-prong star knob design provides ample grip surface for firm hand-tightening without a wrench, speeding up fixture changes.
Available in both M8 and M10 metric threads to match the most common workshop fastener standards in a single product listing.
Anodized aluminum knob resists corrosion and wear; stainless steel threaded shank provides strength and rust resistance in humid shop environments.
Shank lengths from 10mm to 60mm (0.39–2.36 in) cover thin panel clamping through deep fixture stacking in a single SKU family.
Silver, Black, Burgundy, and Royal Blue finishes let you color-code fixtures by function or match your workshop aesthetic.
Each order ships as 2 pcs, giving you matched pairs for symmetric clamping setups such as dual-rail fences and bilateral fixture plates.
| Material — Knob | Anodized Aluminum |
|---|---|
| Material — Bolt | Stainless Steel |
| Head Style | Four-Prong Star Clamp Knob |
| Drive Style | Thumbscrew (hand-tightened) |
| Thread Size | M8 or M10 (select variant) |
| Thread Standard | Metric (ISO) |
| Thread Pitch | M8 × 1.25 mm / M10 × 1.5 mm (standard coarse) |
| Shank Length (excl. head) | 10 / 12 / 15 / 18 / 20 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 mm |
| Color / Finish | Silver, Black, Burgundy, Royal Blue (anodized) |
| Quantity per Pack | 2 pcs |
| Knob Outer Diameter | See variant options |
| Knob Height | See variant options |
Measure the inner diameter of your threaded hole or insert. M8 threads have an 8 mm nominal diameter (typically 1.25 mm pitch); M10 threads have a 10 mm nominal diameter (typically 1.5 mm pitch). If you are using standard T-nuts or threaded inserts, check the insert's listed thread spec before selecting your variant.
These knobs are designed for moderate hand-tightened clamping — suitable for securing jigs, fences, and fixture plates in woodworking and light machining. For applications requiring high torque or vibration resistance, supplement with a lock washer or use a wrench-tightened bolt instead.
Yes. The knobs are anodized aluminum, which provides a hard oxide layer that resists corrosion, scratching, and fading. The stainless steel bolt shank also offers good rust resistance in typical indoor workshop conditions. Avoid prolonged exposure to salt spray or strong acids.
These thumb screws are compatible with T-slot extrusions that accept M8 or M10 T-nuts. Common 20-series and 30-series extrusion profiles use M5 or M8 T-nuts — confirm your extrusion's T-nut spec before ordering. M10 variants suit heavier 40-series or 45-series profiles.
Select a shank length that allows the bolt to pass fully through your clamping material with at least 5–8 mm of thread engagement in the receiving nut or insert. For example, clamping a 15 mm panel into a T-nut requires at least a 20–25 mm shank. Add the panel thickness plus the minimum engagement depth to determine your minimum length.
The anodized aluminum knob and stainless steel bolt offer reasonable moisture resistance for occasional outdoor use. For continuous outdoor or marine exposure, consider applying a light coat of anti-corrosion spray and inspect periodically for any surface oxidation on the knob's cut edges.
Most clamping setups — such as dual-rail fences, bilateral fixture plates, and symmetric stop blocks — require matched pairs for balanced clamping force. Selling in pairs ensures you have both fasteners needed for a complete symmetric setup without ordering twice.
