🔩 A2-70 Stainless Steel Dome Nuts – Domed Acorn Hex Nuts M3 to M12 | DIN1587
🏷️ Brand: HomeDIYer Fastener | DIN1587 | A2-70 | Corrosion-Resistant | Metric Coarse
📌 Overview — Add a finished, decorative touch while protecting exposed threads. When you need to cover the end of a bolt for safety or aesthetics, our A2-70 Stainless Steel Dome Nuts (Acorn Nuts) are the perfect solution. The smooth, rounded dome covers protruding threads, preventing snags, injuries, and corrosion on the exposed bolt end. Ideal for furniture, railings, marine hardware, automotive trim, and any visible fastening application. Made from A2-70 stainless steel, these nuts resist rust and staining even in outdoor and coastal environments. Available in metric coarse threads from M3 to M12. Choose your exact quantity – no mixed packs unless requested. Perfect for builders, fabricators, and DIYers who value both function and finish.
✨ Key Features – A2 Stainless Steel Dome / Acorn Nuts
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Smooth Domed Top – Covers exposed bolt threads for a clean, finished appearance and improved safety (no sharp edges).
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Protects Threads from Damage – Shields bolt ends from corrosion, dirt, and mechanical damage – extends fastener life.
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A2-70 Stainless Steel (304 equivalent) – Excellent corrosion resistance for outdoor, marine, and industrial environments. No red rust.
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DIN1587 Standard – Precision hexagon dome nuts with consistent dimensions and reliable fit.
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Metric Coarse Threads M3–M12 – Standard ISO metric pitches: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M8x1.25, M10x1.5, M12x1.75.
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Untreated Natural Stainless Finish – Clean, smooth surface with a bright, professional appearance – no coatings to chip.
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Order Exact Quantity – “As per Your Choice” – buy only what you need. No forced mixed packs.
📏 Technical Specifications – Dome / Acorn Nuts (DIN1587, Metric Coarse)
| Thread Size |
Thread Pitch (mm) |
Spanner / Wrench Size (mm) |
| M3 |
0.5 |
5.5 |
| M4 |
0.7 |
7 |
| M5 |
0.8 |
8 |
| M6 |
1.0 |
10 |
| M8 |
1.25 |
13 |
| M10 |
1.5 |
17 |
| M12 |
1.75 |
19 |
💡 Ordering info: “As per Your Choice” – select the exact thread size and quantity you need. No mixed packs unless requested. These nuts are compatible with standard metric coarse bolts (e.g., ISO metric 6g threads). Contact us for bulk or custom assortments.
🔧 Why dome nuts? Beyond their decorative appearance, dome nuts protect exposed bolt ends from corrosion, prevent clothing or skin from snagging on threads, and give a professional, finished look to any project. Essential for railings, handles, and exposed fasteners.
❓ Frequently Asked Questions – Dome / Acorn Nuts
What is the purpose of a dome nut versus a standard hex nut?
🔧 A dome nut (acorn nut) has a closed, rounded top that covers the end of the bolt. This protects the threads from damage, prevents snagging on clothing or skin, and provides a clean, decorative finish. Standard hex nuts leave the bolt end exposed.
Are these nuts compatible with any metric bolt?
📏 Yes, they use standard metric coarse threads (M3x0.5, M4x0.7, M5x0.8, M6x1.0, M8x1.25, M10x1.5, M12x1.75). They fit any bolt or threaded rod with the same thread pitch. Do not use with fine-thread bolts – match the pitch.
Will these nuts rust? Are they suitable for outdoor use?
🌊 No – A2-70 stainless steel (304 grade) provides excellent corrosion resistance for outdoor, marine (freshwater and coastal), and humid environments. They will not rust like carbon steel. For continuous saltwater immersion, consider A4 (316) stainless, but A2 is perfect for most exterior applications.
What wrench size do I need for each nut?
🔧 M3 → 5.5mm, M4 → 7mm, M5 → 8mm, M6 → 10mm, M8 → 13mm, M10 → 17mm, M12 → 19mm. Use standard metric combination wrenches, sockets, or ratchets.
Can I use these dome nuts with stainless steel bolts to prevent galvanic corrosion?
⚡ Yes. Using A2 stainless dome nuts with A2 stainless bolts (or other compatible metals) avoids galvanic corrosion. They are ideal for matching fastener systems. Avoid pairing with plain steel or aluminum directly unless insulated.
⚙️ HomeDIYer Fastener — Quality stainless steel dome nuts for a finished, professional look. Order your exact size and quantity today.
