🔩 A2 Stainless Steel Socket Cap Screws – Hexagon Allen Key Bolts (M3 to M10) | DIN912
🏷️ Brand: HomeDIYer Fastener | DIN912 | A2-70 | Fully Threaded
📌 Overview — High-strength, corrosion-resistant fasteners for precision assemblies. Whether you're building industrial machinery, repairing marine equipment, assembling 3D printers, or working on automotive components, you need bolts that deliver consistent torque and a clean, professional look. Our A2-70 Stainless Steel Socket Cap Screws (DIN912) feature a cylindrical head with a hexagon socket drive (Allen key). This design allows for high clamping force without slipping or cam-out, and the low-profile head fits into counterbored holes seamlessly. Made from A2 stainless steel, these fully threaded metric bolts resist rust and corrosion, ensuring long-term reliability in harsh environments. Perfect for mechanics, fabricators, and DIYers who demand precision and durability.
✨ Key Features of A2-70 Stainless Steel Hex Socket Cap Screws
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Hexagon Socket Drive (Allen Key) – Allows for high torque transmission without stripping; uses common metric hex keys (2.5mm to 8mm).
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Fully Threaded Design – Provides maximum grip strength and versatility for any material thickness; length measured from under the head.
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A2-70 Stainless Steel (304 equivalent) – Excellent corrosion resistance for outdoor, marine, and industrial applications. No red rust.
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DIN912 Standard – Precision dimensions ensure compatibility with standard counterbored holes and metric nuts.
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Cylindrical Head Profile – Clean, professional appearance; ideal for machine assembly and visible fastening points.
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Metric Coarse Threads M3–M10 – Covers small electronics (M3) to heavy equipment (M10). Choose any length you need.
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Untreated Natural Stainless Finish – No coatings to chip or flake; smooth surface for consistent torque.
📏 Technical Specifications – Socket Cap Screws (DIN912, Metric Coarse)
| Thread Size |
Thread Pitch (mm) |
Allen Key Size (mm) |
Head Diameter (mm) |
Head Height (mm) |
Fully Threaded |
| M3 |
0.5 |
2.5 |
5.7 |
3.0 |
✅ |
| M4 |
0.7 |
3.0 |
7.0 |
4.0 |
✅ |
| M5 |
0.8 |
4.0 |
8.5 |
5.0 |
✅ |
| M6 |
1.0 |
5.0 |
10.0 |
6.0 |
✅ |
| M8 |
1.25 |
6.0 |
13.0 |
8.0 |
✅ |
| M10 |
1.5 |
8.0 |
16.0 |
10.0 |
✅ |
💡 Length & ordering 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 = Superior corrosion resistance — Ideal for marine environments, outdoor furniture, food processing equipment, and automotive trim. Tensile strength 700 MPa.
❓ Frequently Asked Questions – Socket Cap Screws (Allen Bolts)
What is the difference between a socket cap screw and a regular hex bolt?
🔩 A socket cap screw has a cylindrical head with a recessed hexagon drive (Allen key), allowing for higher torque and a flush or counterbored fit. Regular hex bolts have external hex heads and require a wrench or socket. Socket heads provide a cleaner appearance and better access in tight spaces.
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 any material thickness. We currently stock only fully threaded versions for this range — partial thread available upon request for bulk orders.
What Allen key sizes do I need for each bolt?
📐 M3 → 2.5mm, M4 → 3mm, M5 → 4mm, M6 → 5mm, M8 → 6mm, M10 → 8mm. Using the correct size ensures proper torque and prevents stripping the socket head. All standard metric hex keys 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, 80, 90, 100mm). Bulk custom lengths also possible — just let us know your requirement.
Are these screws compatible with standard metric nuts and tapped holes?
🔩 Yes, manufactured according to DIN912 with standard metric coarse thread pitches. They fit perfectly with any metric nut, threaded insert, or pre-tapped hole of the same size. No compatibility issues.
⚙️ HomeDIYer Fastener — Precision metric hardware for makers & professionals. Order your exact length today.
