Phillips Flanged Button Head Machine Screws in A2 Stainless Steel — Built-In Washer Face, M2 to M6
Reaching for a separate washer every time you drive a button head screw slows down assembly and adds one more part to track. For electronics builders, RC hobbyists, and light fabricators who need a clean, low-profile fastener that distributes load without a loose washer rattling around, the flanged button head screw solves the problem in a single piece. These A2 stainless steel Phillips flanged button head machine screws cover M2 through M6 in a wide range of lengths, giving DIYers and small-batch assemblers a reliable metric fastener that works straight out of the pack.
Each pack contains flanged button head machine screws made from A2 stainless steel (304 grade), available in diameters M2, M2.5, M3, M4, M5, and M6. Lengths range from 3mm (≈1/8") to 50mm (≈2"), with pack quantities of 5, 10, 20, or 50 pieces depending on size. The low-profile dome head features an integrated flange (washer face) at the base that spreads clamping force over a wider footprint than a standard button head, reducing the risk of pull-through in softer materials. Drive is Phillips (cross-head), compatible with standard PH1 and PH2 bits.
These flanged button head screws are a go-to choice for 3D printer frame assembly and electronics enclosures where a low-profile head and built-in load distribution matter, for RC car and drone builds where saving weight and part count is a priority, and for furniture hardware and panel fastening in aluminum extrusion systems where a clean, washer-free finish is preferred. The stainless construction also makes them suitable for light outdoor fixtures and garden equipment where mild corrosion resistance is needed.
🔩 Compatibility: ISO metric thread standard — fits standard metric nuts, threaded inserts, and tapped holes (M2–M6). Phillips drive: PH1 for M2–M3, PH2 for M4–M6 (typically). These are machine screws — not self-tapping. A pre-tapped hole, nut, or threaded insert is required.
✅ Key Features of These Phillips Flanged Button Head Screws
- ⚙️Integrated Flange — No Separate Washer Needed — The built-in washer face at the base of the head distributes clamping load over a wider area, reducing pull-through risk in plastic, aluminum, and composite materials without adding a loose washer to your assembly.
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🦀A2 Stainless Steel (304 Grade) — Resists rust and oxidation in indoor and light outdoor environments, making these stainless flanged button head screws a durable alternative to zinc-plated fasteners in humid or damp conditions.
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🔽Low-Profile Dome Head — The rounded button head sits closer to the surface than a hex socket cap screw, reducing snag points in tight assemblies, enclosures, and moving parts where head clearance is limited.
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➕Phillips Drive for Fast Installation — Compatible with standard PH1 and PH2 Phillips bits, making these screws easy to drive with any power drill or hand screwdriver — no hex key or specialty tool required.
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📐Wide Size Range — M2 to M6, 3mm to 50mm — Six diameter options and lengths from 3mm (≈1/8") to 50mm (≈2") cover the most common metric machine screw sizes for electronics, hobby, and light fabrication applications.
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📦Flexible Pack Quantities — Available in packs of 5, 10, 20, or 50 pieces depending on size, so you can order exactly what your project requires without overstocking on fasteners you won't use.
📐 Technical Specifications — Phillips Flanged Button Head Machine Screws
| Material |
A2 Stainless Steel (304 Grade) |
| Drive Type |
Phillips (Cross-Head) |
| Recommended Bit Size |
PH1 for M2–M3; PH2 for M4–M6 (typically) |
| Head Style |
Flanged Button Head (Low-Profile Dome with Integrated Washer Face) |
| Thread Standard |
ISO Metric Coarse Pitch (M2, M2.5, M3, M4, M5, M6) |
| Available Lengths |
3mm (≈1/8") to 50mm (≈2") — see variant options |
| Length Measurement |
Shank length only — head not included (standard for button head screws) |
| Pack Quantity |
5, 10, 20, or 50 pcs — varies by size |
| Finish |
Natural stainless (uncoated) |
| Corrosion Resistance |
Suitable for indoor and light outdoor use |
| Screw Type |
Machine screw (requires pre-tapped hole, nut, or threaded insert) |
| Compatible Fasteners |
Standard ISO metric nuts and threaded inserts |
⚠️ Note: Button head screw length is measured as shank length only — the head height is not included. Account for head height when calculating total installed height in recessed or countersunk applications. Contact us if you need clarification on fit.
❓ Frequently Asked Questions
What is the difference between a flanged button head screw and a standard button head screw?
A flanged button head screw has an integrated washer-like flange at the base of the head that distributes clamping load over a wider area. A standard button head screw has a smooth, rounded dome with no flange. The flange eliminates the need for a separate flat washer in most applications, reduces the risk of the head pulling through softer materials, and provides a cleaner finished appearance.
How do I choose the right length for a flanged button head screw?
For button head screws, the stated length is the shank length only — the head is not included in the measurement. Measure the thickness of the material being fastened, then add the depth of thread engagement needed in the base material (typically at least 1.5× the screw diameter). For example, an M4 screw through a 3mm panel into a tapped hole generally needs at least 9–12mm of total length. Available lengths in this listing range from 3mm (≈1/8") to 50mm (≈2").
What grade is the stainless steel, and are these screws suitable for outdoor use?
These screws are made from A2 stainless steel (304 grade), which generally provides good corrosion resistance for indoor and light outdoor environments. They resist rust and oxidation better than zinc-plated carbon steel. For marine or highly corrosive environments, A4 (316) stainless steel is typically recommended. Contact us to confirm suitability for your specific application.
What thread standard do these machine screws use — are they compatible with standard metric nuts?
These are ISO metric machine screws with standard coarse-pitch threads (M2 through M6). They are compatible with standard metric nuts, threaded inserts, and tapped holes of the corresponding size. They are not compatible with UNC or UNF inch-standard threads used in some American hardware.
What screwdriver or bit do I need for Phillips flanged button head screws?
These screws use a Phillips (cross-head) drive. For M2–M3, a PH1 (Phillips #1) bit is generally appropriate. For M4–M6, a PH2 (Phillips #2) bit is typically used. Always use a correctly sized bit to avoid cam-out and head damage, especially on smaller sizes like M2 and M2.5.
Do I need a washer with these flanged button head screws?
In most applications, no. The integrated flange at the base of the head acts as a built-in washer, distributing the clamping load over a wider surface area. This is particularly useful when fastening softer materials like plastic, aluminum, or wood composites where a standard button head might pull through or cause surface damage. For high-load structural applications, contact us to confirm whether an additional washer is recommended.
Are these machine screws self-tapping?
No. These are standard machine screws and require a pre-tapped hole, a threaded insert, or a nut to fasten. They will not cut their own threads. For wood or plastic applications without a threaded insert, a self-tapping screw would be needed instead.
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