🔩 M2–M6 Flanged Button Head Screws – Carbon Steel, Phillips Drive, Galvanized Finish (Black Zinc / Nickel Plated)
You're assembling a 3D printer, mounting a panel, or fastening a bracket in a tight spot – and you need a screw that doesn't need a separate washer. These flanged button head machine screws have an integrated flange that spreads the load like a built‑in washer, saving you time and parts. Made from carbon steel with a choice of nickel or black zinc plating, they resist corrosion and look clean. The low button head sits neatly above the surface, while the Phillips drive gives you reliable bit engagement. Available in M2, M2.5, M3, M4, M5, and M6 diameters, with lengths ranging from short to long (e.g., M3x5). Ideal for electronics enclosures, automotive interior trim, or any assembly where you want a wide bearing surface without a separate washer.
✨ Key Features – Flanged Button Head Machine Screws (Metric)
- 🔘 Integrated flange (built‑in washer) – The wide flange distributes clamping force evenly, prevents pull‑through, and eliminates the need for a separate flat washer.
- 📏
Phillips drive – Standard cross recess works with common screwdrivers and bits. Allows good torque control.
- 📏 Wide metric range M2 to M6 – M2, M2.5, M3, M4, M5, M6 diameters. Covers everything from miniature electronics to light machinery.
- 🔩 Low button head profile – Sits close to the surface with a smooth, rounded top. Great for applications where head height is limited.
- 🧪 Corrosion‑resistant finishes – Choose nickel plated (bright silver) or black zinc plated (matte black). Both provide good protection against rust and wear.
- 💪 High‑quality carbon steel – Strong and durable. Precision threads are clean, burr‑free, and consistent for smooth assembly.
- ⚙️ Fully threaded (typical) – Most lengths are fully threaded under the head, giving you maximum grip in any material thickness.
📏 Specifications – Flanged Button Head Phillips Screws (Carbon Steel)
| Thread Diameter |
Thread Pitch (mm) |
Typical Lengths (mm) * |
Finish Options |
| M2 |
0.4 |
3, 4, 5, 6, 8, 10, 12 |
Nickel / Black zinc |
| M2.5 |
0.45 |
4, 5, 6, 8, 10, 12, 16 |
Nickel / Black zinc |
| M3 |
0.5 |
4, 5, 6, 8, 10, 12, 16, 20, 25, 30 |
Nickel / Black zinc |
| M4 |
0.7 |
5, 6, 8, 10, 12, 16, 20, 25, 30 |
Nickel / Black zinc |
| M5 |
0.8 |
6, 8, 10, 12, 16, 20, 25, 30, 40 |
Nickel / Black zinc |
| M6 |
1.0 |
8, 10, 12, 16, 20, 25, 30, 40, 50 |
Nickel / Black zinc |
* Lengths are approximate and vary by supplier. Select exact size from dropdown. Length is measured from under the head to the tip.
📋 Material & Finish Details
| Parameter |
Details |
| Base material |
Carbon steel (high strength) |
| Surface finishes |
Nickel plated (bright silver) / Black zinc plated (matte black) |
| Head style |
Flanged button head (low profile with integrated washer) |
| Drive |
Phillips cross recess |
| Thread standard |
Metric coarse (DIN or ISO equivalent) – fully threaded for most lengths |
| Typical applications |
Electronics, 3D printers, automotive trim, furniture, appliances, DIY projects |
❓ Frequently Asked Questions – Flanged Button Head Screws
1. What is a flanged button head screw? Why choose it over a regular pan head?
A flanged button head has an integrated washer‑like flange directly under the head. This flange distributes clamping pressure over a larger area, reducing the chance of the head pulling through soft materials like plastic or thin sheet metal. It also eliminates the need for a separate flat washer, saving assembly time. The button head itself is low profile, so it doesn't stick out as much as a pan head.
2. Are these screws self‑tapping or machine screws?
These are machine screws, not self‑tapping. They are designed to go into pre‑tapped holes or be used with a matching nut. For use in wood or soft plastic, you should drill a pilot hole and thread them in – but for best results, use a threaded insert or a nut on the back.
3. What’s the difference between nickel plating and black zinc plating?
Nickel plating gives a bright, silver‑colored finish with good corrosion resistance – it’s often used for visible applications where appearance matters. Black zinc plating produces a matte black finish that blends well with dark equipment and also offers good rust protection. Both are suitable for indoor use and light outdoor exposure. Neither is as corrosion‑proof as stainless steel, but they are much cheaper and adequate for most DIY environments.
4. How do I measure the length of a flanged button head screw?
Length is measured from the underside of the head (just below the flange) to the tip. The flange and head height are not included. For example, an “M3 x 10mm” screw has a 10mm long threaded shaft under the flange.
5. Can I use these screws with a nut? What size nut do I need?
Yes – use a standard metric nut of the same thread diameter (e.g., M3 nut for an M3 screw). The thread pitch is standard coarse: M2 (0.4mm), M2.5 (0.45mm), M3 (0.5mm), M4 (0.7mm), M5 (0.8mm), M6 (1.0mm). Most hardware stores carry these nuts.
6. Are these screws magnetic? Can I pick them up with a magnetic screwdriver?
Yes – carbon steel is ferromagnetic, so they are strongly magnetic. A magnetic screwdriver or bit will hold them easily. This can be an advantage when working in tight spaces where you might drop a screw.
