M3*16 Aluminum Alloy Knurled Thumb Screws Hand Grip Knob Bolts Thread L:16mm

These screws use the standard M3 coarse thread pitch of 0.5 mm. This is the most common M3 pitch and is compatible with the vast majority of M3-tapped holes, threaded brass inserts, and nylon-insert standoffs used in electronics enclosures, RC chassis, and 3D-printed parts.

Aluminum alloy has a lower tensile strength than steel, so these thumb screws are not intended for high-torque structural joints. They are designed for panel retention, access covers, and light-duty clamping where hand-tightening force is sufficient. For joints that require a torque wrench, a steel socket-head cap screw is a better choice.

Anodizing converts the outer aluminum surface into aluminum oxide, which is significantly more corrosion-resistant than bare aluminum. These screws are suitable for light outdoor exposure such as equipment enclosures in sheltered locations. For prolonged salt-spray or fully outdoor environments, consider stainless steel alternatives.

A single-piece pack is ideal when you need one replacement screw. Packs of 5 or 10 suit small project builds. Packs of 50 or 100 are cost-effective for workshop stock, production batches, or when building multiple identical assemblies such as a set of RC cars or a rack of electronics enclosures.

Yes. They work well with threaded brass heat-set inserts pressed into PLA, PETG, or ABS 3D-printed parts, as well as with nylon standoffs and acrylic panels that have been tapped or fitted with inserts. Do not thread directly into soft plastics without an insert, as repeated removal will strip the plastic thread.

Yes. All color variants share the same M3×0.5 thread, 16 mm shank length, and 6061 aluminum alloy construction. The only difference between variants is the anodized color finish. You can mix colors within a build without any dimensional mismatch.

The suffix in the SKU identifies the color variant: 090881 = Dark Red, 090882 = Rose Red, 090883 = Golden, 090884 = Royal Blue, 090885 = Sky Blue, 090886 = Black, 090887 = Silver, 090888 = Green, 090889 = Purple, 090890 = Orange. The trailing number after the "x" indicates pack quantity (x1, x5, x10, x50, x100).