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When you need a low-profile head, a built-in load-spreading flange, and a clean matte black finish — all in one fastener — these flanged button head Phillips machine screws deliver exactly that. The integrated flange around the base of the head acts as a built-in washer, distributing clamping load over a larger surface area and eliminating the need for a separate washer in most applications. The result is faster assembly, fewer parts, and a cleaner finished look.
The black zinc coating provides moderate corrosion resistance with a matte black aesthetic that suits electronics enclosures, automotive interiors, equipment panels, and anywhere a standard silver fastener would stand out. The low-profile domed button head keeps a minimal footprint while the Phillips drive is compatible with standard PH0, PH1, and PH2 screwdrivers depending on size.
Available in M2, M2.5, M3, and M4 thread diameters with lengths from 3mm to 16mm, sold in convenient 100-piece packs.
| Thread Standard | ISO Metric |
|---|---|
| Drive Type | Phillips (PH / Cross Head) |
| Head Style | Flanged Button Head (Low Profile Dome with Integrated Flange) |
| Surface Finish | Black Zinc (Black Electro-Zinc + Black Chromate) |
| Thread Diameters | M2, M2.5, M3, M4 |
| Lengths Available | 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm |
| Pack Size | 100 Pcs |
| Recommended Driver | PH0 (M2–M2.5) / PH1 (M3) / PH1–PH2 (M4) |
| Corrosion Resistance | Moderate (suitable for indoor and light outdoor use) |
| Country of Origin | Contact us to confirm |
A flanged button head screw has a low-profile domed head with an integrated flange (a wide, flat rim) around the base of the head. The flange acts like a built-in washer, distributing the clamping load over a larger surface area. This eliminates the need for a separate washer in most applications, reduces the risk of the head pulling through softer materials, and provides a cleaner finished appearance.
Black zinc (black electro-zinc) is a zinc electroplating process followed by a black chromate conversion coating. It provides moderate corrosion resistance while giving the fastener a matte black appearance. It is suitable for indoor applications and light outdoor use. For harsh outdoor or marine environments, stainless steel or hot-dip galvanized fasteners are more appropriate.
M2–M2.5 typically use a PH0 driver, M3 typically uses a PH1 driver, and M4 typically uses a PH1 or PH2 driver. Using the correct size driver is important to avoid cam-out and head damage.
In most applications, no. The integrated flange distributes the clamping load over a larger area, performing the same function as a flat washer. This simplifies assembly, reduces part count, and provides a cleaner finished appearance.
These screws follow the ISO metric thread standard, compatible with standard metric nuts, threaded inserts, and tapped holes in M2, M2.5, M3, and M4.
For machine screws used with a nut, the screw should extend at least 1–2 thread pitches beyond the nut when fully tightened. For screws threading into a tapped hole, aim for at least 1.5× the thread diameter of engagement. Note that for button head screws, the length is measured from the underside of the head (not the flange) to the tip of the screw.
