M2–M10 Phillips Button Head Machine Screws — 304 Stainless Steel

A general rule of thumb is to select a screw length approximately 2–3 times the thickness of the material being fastened. For example, fastening a 5mm panel typically calls for a 10–15mm screw. All lengths are listed in millimeters — to convert, divide by 25.4 (e.g., 25mm ≈ 1", 50mm ≈ 2", 100mm ≈ 3-15/16"). When in doubt, choose the longer option for better holding strength.

304 stainless steel machine screws generally have a tensile strength of approximately 500–700 MPa, depending on diameter and manufacturing process. For structural or load-bearing applications, we recommend consulting an engineer to confirm suitability for your specific use case.

304 stainless steel offers good corrosion resistance in most outdoor environments and is generally suitable for light outdoor use, garden fixtures, and covered exterior applications. For harsh marine or coastal environments with prolonged saltwater exposure, 316 stainless steel is typically recommended instead.

Yes. These screws follow the ISO metric thread standard (M-series) and are compatible with standard metric nuts, threaded inserts, and tapped holes of the corresponding diameter. They are not compatible with UNC or UNF imperial-threaded components. Always verify thread pitch for your specific application.

Driver bit size varies by screw diameter. As a general guide: M2–M3 typically use a PH1 bit, M4–M6 typically use a PH2 bit, and M8–M10 typically use a PH3 bit. Always use the correct bit size to avoid cam-out and head damage during installation.

Yes — these are among the most common use cases for this screw type. They work well with aluminum extrusion T-nuts, plastic enclosure bosses with threaded inserts, and 3D printer frame assemblies. A pre-tapped hole or matching nut is always required; these screws are not self-tapping.

A button head features a low-profile dome shape that sits cleanly against the surface without protruding as much as a pan head, while still providing a wider bearing surface than a flat (countersunk) head. This makes it a popular choice for visible assemblies in electronics, robotics, and furniture where a finished look matters and countersinking is not practical.