🔩 A2 Stainless Hexagon Set Screws with Nyloc Nuts & Washers – Fully Threaded Bolts M3 to M12 | DIN933 + DIN985 + DIN125
🏷️ Brand: HomeDIYer Fastener | DIN933 (Screws) + DIN985 (Nyloc Nuts) + DIN125 (Washers) | A2-70 Stainless
📌 Overview — Everything you need for a secure, vibration-proof connection in one complete set. Stop piecing together hardware from different bins. Our Hexagon Head Set Screws with Nyloc Nuts and Washers provide a complete fastening solution for M3 to M12 applications. Each screw is fully threaded (DIN933) with a standard hex head, paired with a Nyloc (nylon insert) locking nut that prevents loosening from vibration, plus a flat washer (Form A) to protect your work surface and distribute load. Made from A2-70 stainless steel, these kits resist rust and corrosion – perfect for marine equipment, outdoor furniture, industrial machinery, automotive repairs, and any project where reliability matters. Choose your exact length and quantity. No more mismatched hardware – just professional-grade fasteners ready to assemble.
✨ Key Features – Hexagon Head Set Screw Kits with Nyloc Nuts & Washers
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Complete 3-in-1 Kit – Each screw comes with one Nyloc nut (DIN985) and one flat washer (DIN125 Form A) – no separate sourcing needed.
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Fully Threaded Hexagon Head Screws (DIN933) – Standard metric coarse threads, fully threaded for maximum grip. Length measured from under the head.
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Nyloc Locking Nuts – Nylon insert grips the threads to prevent loosening from shock, vibration, and thermal cycling.
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A2-70 Stainless Steel (304 equivalent) – Outstanding corrosion resistance for outdoor, marine, and humid environments.
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Included Flat Washers – Protect the work surface, distribute clamping load, and prevent pull-through in soft materials.
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Wide Metric Range M3 to M12 – Covers small electronics (M3) to heavy structural assemblies (M12). Order any length you need.
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Matching Wrench Sizes – Screw hex head and nut share the same spanner size for convenience (e.g., M5 uses 8mm wrench for both screw and nut).
📏 Technical Specifications – Screw, Nyloc Nut & Washer Dimensions (Metric Coarse)
| Thread Size |
Thread Pitch (mm) |
Screw Hex Spanner (mm) |
Nut Spanner Size (mm) |
Washer Outer Diameter (mm) |
| M3 |
0.5 |
5.5 |
5.5 |
7 |
| M4 |
0.7 |
7 |
7 |
9 |
| M5 |
0.8 |
8 |
8 |
10 |
| M6 |
1.0 |
10 |
10 |
12 |
| M8 |
1.25 |
13 |
13 |
16 |
| M10 |
1.5 |
17 |
17 |
20 |
| M12 |
1.75 |
19 |
19 |
24 |
💡 Kit contents & ordering: Each set includes: 1x fully threaded hexagon head screw (DIN933) + 1x Nyloc nut (DIN985) + 1x flat washer (DIN125 Form A). Choose your length (e.g., 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm) and quantity. Screw length does not include the head. Contact us for bulk or custom assortments.
🔒 Why Nyloc nuts? The nylon insert creates friction against the male thread, making these nuts ideal for high-vibration applications like engines, pumps, and outdoor equipment. They can be reused several times while still retaining good locking performance.
❓ Frequently Asked Questions – Hexagon Set Screw Kits with Nyloc Nuts & Washers
What is included in each kit? Are the screw, nut, and washer matched?
✅ Yes, each kit consists of one fully threaded hexagon head screw (DIN933), one Nyloc nut (DIN985), and one flat washer (DIN125 Form A). All components are A2-70 stainless steel and sized to match perfectly. You order the exact thread size, length, and quantity you need.
Are these screws fully threaded? What lengths are available?
📏 Yes, all screws in this range are fully threaded (DIN933 standard). Lengths are measured from under the head, not including the head. Common lengths from 10mm up to 100mm – you choose the exact length when ordering. Custom lengths available for bulk orders.
Can I reuse the Nyloc nuts after removing them?
🔄 Yes, Nyloc nuts can be reused several times. The nylon insert deforms slightly to grip the threads, so after 5-10 cycles, the locking torque may reduce. For safety-critical or high-vibration applications, we recommend replacing them with fresh nuts. For general DIY, reuse is perfectly fine.
What wrench sizes do I need for the screw head and nut?
🔧 Conveniently, the screw hex head and the Nyloc nut share the same spanner size for each thread: M3 → 5.5mm, M4 → 7mm, M5 → 8mm, M6 → 10mm, M8 → 13mm, M10 → 17mm, M12 → 19mm. A single wrench size works for both ends.
Are these fasteners corrosion-resistant for outdoor use?
🌊 Yes – A2-70 stainless steel (304 grade) provides excellent corrosion resistance for outdoor furniture, marine hardware, coastal environments, and food processing equipment. They will not rust like carbon steel. For continuous saltwater immersion, consider A4 (316) stainless, but A2 is perfect for most exterior applications.
⚙️ HomeDIYer Fastener — Complete fastener kits for professionals and makers. Order your exact size, length, and quantity today.
