🔩 A2 Stainless Steel Flanged Button Head Screws – Allen Socket Bolts M3 to M8 | ISO7380-2
🏷️ Brand: HomeDIYer Fastener | ISO7380-2 | A2-70 | Fully Threaded | Hex Bits Included
📌 Overview — Clean, low-profile fastening with an integrated washer flange. Tired of dealing with separate washers or bulky bolt heads? Our A2 Stainless Steel Flanged Button Head Screws (ISO7380-2) combine a sleek domed head with a wide integrated flange that distributes load and eliminates the need for a separate flat washer. The hex socket drive (Allen key) allows high torque without slipping, while the A2-70 stainless steel construction resists rust and corrosion – ideal for marine equipment, automotive trim, electronics enclosures, and outdoor furniture. Fully threaded from M3 to M8, these screws provide a consistent grip along the entire length. Plus, we include the correct hex screwdriver bits with your order. Choose your length and quantity – perfect for builders, mechanics, and DIYers who value both form and function.
✨ Key Features of Flanged Button Head Socket Screws
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Integrated Wide Flange – Eliminates the need for a separate washer; distributes clamping load and protects the work surface.
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Low-Profile Button Head – Sleek domed appearance sits flush or slightly proud – snag-free and professional looking.
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Hex Socket Drive (Allen Key) – Allows precise torque application without cam-out; hex bits included with your order (2mm to 5mm).
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A2-70 Stainless Steel (304 equivalent) – Excellent corrosion resistance for outdoor, marine, and industrial environments.
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Fully Threaded Design – Maximum grip strength and versatility for any material thickness; length measured from under the head.
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ISO7380-2 Standard – Precision dimensions for consistent fit and compatibility with metric nuts and tapped holes.
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Metric Coarse Threads M3–M8 – Covers small electronics (M3) to medium machinery (M8). Order any length you need.
📏 Technical Specifications – Flanged Button Head Screws (ISO7380-2, Metric Coarse)
| Thread Size |
Thread Pitch (mm) |
Head Diameter (mm) |
Head Height (mm) |
Allen Key Size (mm) |
| M3 |
0.50 |
6.9 |
1.65 |
2.0 |
| M4 |
0.70 |
9.4 |
2.2 |
2.5 |
| M5 |
0.80 |
11.8 |
2.8 |
3.0 |
| M6 |
1.00 |
13.6 |
3.3 |
4.0 |
| M8 |
1.25 |
17.8 |
4.4 |
5.0 |
💡 Length & ordering info: Screws are fully threaded. Length is measured from the underside of the head (does not include head height). Choose your preferred length (e.g., 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm) — sold as per your requirement. Hex bits are included with your order – one bit per size or a multi-bit driver, depending on the pack.
🔩 Why flanged button head? The flange acts as an integrated washer, saving time and parts. The button head gives a smooth, low-profile finish – ideal for visible assemblies like handrails, machine guards, and consumer products.
❓ Frequently Asked Questions – Flanged Button Head Allen Screws
Do I still need a washer with these flanged screws?
🔧 No. The integrated flange replaces a standard flat washer. It distributes the clamping load and protects the work surface. This saves assembly time and reduces parts inventory. For extremely soft materials, you can still add a backup washer, but it's rarely necessary.
Are these screws fully threaded? What lengths are available?
✅ Yes, all sizes are fully threaded for maximum grip. Lengths are measured from under the head. Common lengths: 6mm to 50mm (e.g., 6,8,10,12,16,20,25,30,35,40,45,50mm). Custom lengths available for bulk orders – just let us know your requirement.
What hex key/bit do I need? Do you include them?
📐 M3 → 2mm, M4 → 2.5mm, M5 → 3mm, M6 → 4mm, M8 → 5mm. Yes, the box includes the correct hex screwdriver bits for the screws you order – no need to buy tools separately.
Are these screws corrosion-resistant for outdoor use?
🌊 Yes – A2-70 stainless steel (304 grade) provides excellent corrosion resistance for outdoor furniture, marine trim, coastal environments, and food equipment. They will not rust like carbon steel. For continuous saltwater immersion, consider A4 (316) stainless, but A2 is perfect for most exterior applications.
Can I use these screws with standard metric nuts?
🔩 Yes, they use standard metric coarse threads (M3x0.5, M4x0.7, etc.). They fit perfectly with any metric nut, threaded insert, or tapped hole of the same size and pitch.
⚙️ HomeDIYer Fastener — Quality stainless steel hardware with integrated flange & included bits. Order your exact size, length, and quantity today.
