🔧 A2 Stainless Steel Button Head Allen Screws – Metric Hex Socket Bolts M3 to M10
🏷️ Brand: HomeDIYer Fastener | ISO7380 | A2-70
📌 Overview — The precise, corrosion-resistant fasteners your workshop deserves. Whether you’re assembling 3D printers, repairing marine equipment, building custom furniture, or maintaining industrial machinery, the right hardware makes all the difference. Our Button Head Allen Screws (A2 Stainless Steel) deliver a sleek, low-profile dome head combined with the strength of metric hex socket drive. No more rust worries, stripped heads, or mismatched threads. Perfect for DIYers, mechanics, and manufacturers who demand reliable grip and a clean finish. Fully threaded from M3 to M10, you can choose any length you need — get consistent torque, weather resistance, and a professional look every time.
✨ Key Features of A2-70 Button Head Socket Screws
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Premium A2-70 Stainless Steel – Excellent corrosion resistance (equivalent to 304 SS), ideal for indoor/outdoor, humid or marine environments.
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Fully Threaded Design – Maximum holding strength and flexibility for any material thickness; length measured from under the head.
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Low-Profile Button Head – Sleek dome shape reduces snagging, gives a modern finish on visible surfaces.
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Hex Socket Drive (Allen Key) – Precise torque transfer, no cam-out, easy tightening with standard metric hex keys.
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ISO7380 Standard Compliant – Guarantees dimensional accuracy and interchangeability with metric nuts & threaded holes.
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Wide Metric Range M3 to M10 – Covers small electronics to heavy mechanical assemblies. Custom lengths available on request.
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Untreated surface, natural stainless finish – Clean, smooth, and ready for any application without coating flaking.
📏 Technical Specifications — Metric Button Head Bolts (ISO7380)
| Thread Size (Metric) |
Thread Pitch (mm) |
Head Diameter (mm) |
Head Height (mm) |
Hex Key Size (mm) |
| M3 |
0.5 |
5.7 |
1.65 |
2.0 |
| M4 |
0.7 |
7.6 |
2.2 |
2.5 |
| M5 |
0.8 |
9.5 |
2.75 |
3.0 |
| M6 |
1.0 |
10.5 |
3.3 |
4.0 |
| M8 |
1.25 |
14.0 |
4.4 |
5.0 |
| M10 |
1.5 |
17.5 |
5.5 |
6.0 |
💡 Length & packaging info: All screws are fully threaded. Lengths are measured from the underside of the head. Choose your preferred length (e.g., 6mm, 8mm, 10mm, 12mm, up to 100mm or more) — sold as per your requirement. Contact us for bulk or custom-length orders.
🔩 A2-70 Stainless Steel = Maximum corrosion resistance — Salt spray tested, non-magnetic, ideal for marine, food equipment, outdoor furniture, and automotive trim.
❓ Frequently Asked Questions — Button Head Allen Screws
Are these screws fully threaded? Can I get partial thread?
✅ Yes, every screw in this series is fully threaded from under the head to the tip. This provides maximum grip strength and adaptability for variable material thicknesses. We currently do not offer partial thread for button head style, but fully threaded design covers 99% of applications requiring metric socket bolts.
What makes A2-70 stainless steel different from regular steel or zinc?
🔧 A2-70 (equivalent to 304 stainless steel) offers excellent corrosion resistance against moisture, chemicals, and saltwater. It is non-magnetic, durable, and withstands harsh outdoor environments. Unlike zinc-plated steel, it won’t rust after scratches or over time. The "70" refers to tensile strength (700 MPa), providing reliable mechanical performance for structural and decorative uses.
What hex key (Allen wrench) sizes do I need for each bolt?
📐 Refer to our dimension table: M3 uses 2mm, M4 → 2.5mm, M5 → 3mm, M6 → 4mm, M8 → 5mm, M10 → 6mm hex keys. Using the correct size ensures proper torque and prevents stripping the socket head. All standard metric Allen wrenches work perfectly.
Can I order custom lengths? What lengths are commonly available?
📦 Absolutely! “Package Included: As per Your Choice” means you select the length you need when ordering. Common lengths range from 6mm up to 100mm (e.g., 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80mm). Bulk custom lengths also possible — just let us know your requirement. Each screw is fully threaded and cut precisely to ISO standards.
Are these screws compatible with standard metric nuts and tapped holes?
🔩 Yes, manufactured according to ISO7380 (metric button head standard) with standard coarse thread pitch (M3x0.5, M4x0.7, M5x0.8, M6x1.0, M8x1.25, M10x1.5). They fit perfectly with any metric nut, threaded insert, or pre-tapped hole following the same standard. No compatibility issues.
⚙️ HomeDIYer Fastener — Precision metric hardware for makers & professionals. Order your perfect length today.
