M5*5-100mm High Knurled Thumb Screws, Aluminium Nut + Stainless Steel Thread Rod

Measure the total grip length — the combined thickness of all materials the screw must pass through — then add typically 3–5mm for thread engagement beyond the last layer. For example, if your panel stack is 10mm thick, an M5×15mm or M5×20mm screw gives adequate engagement. For blind holes, match the screw length to the hole depth minus 1–2mm to avoid bottoming out.

Yes. The M5 thread is the standard size for most 20-series and 30-series aluminum extrusion T-slot profiles. The knurled nut sits proud of the slot, making it easy to hand-tighten and loosen without tools. Confirm your extrusion's T-slot accepts M5 hardware before ordering.

Yes — M5 knurled thumb screws are widely used for side panel, top panel, and access cover retention on custom and enthusiast PC cases. The knurled grip allows quick panel removal without a screwdriver. Verify that your case's panel holes are threaded or use a matching M5 threaded insert if the holes are unthreaded.

The stainless steel threaded rod offers good corrosion resistance for indoor environments and light-duty outdoor enclosures. The anodized aluminum nut provides an oxide layer that resists surface oxidation. These are not rated for continuous submersion or highly corrosive chemical environments. For marine or outdoor-exposed applications, contact us to confirm suitability.

These thumb screws are designed for hand-tightening in panel-access and light structural applications — not for high-torque or load-bearing joints. Clamping force is sufficient for securing enclosure panels, access covers, and removable brackets. For applications requiring specific torque values or structural load ratings, contact us to confirm.

Absolutely — color-coding fasteners by zone or function is a popular technique among PC modders and electronics builders. For example, use Black for structural connections, Royal Blue for removable panels, and Orange for quick-access covers. All 10 color variants share the same M5 thread and dimensional spec, so they are fully interchangeable by length.

Yes. The anodized color finish is applied to the aluminum nut body, and the same color is used consistently across all length variants within a color family. Minor batch-to-batch variation in anodized tone is possible, as is typical with anodized aluminum. If color consistency across a large order is critical, contact us before purchasing.