We offer an anti loosening Nylock screw engineered for reliable performance in vibration-prone assemblies. We know downtime costs, so we designed them to clamp threads with a nylon insert that resists loosening, even on shocks and heavy-duty equipment. Available in stainless steel and carbon steel, with corrosion-resistant finishes, these screws deliver strong holding power without needing lock-washers or stubborn retightening. For our B2B customers, we provide flexible bulk pricing, quick lead times, and a clear Pricelist that helps you forecast costs accurately. We can tailor thread sizes, head styles, and coatings to suit automotive, machinery, or electrical enclosures. Packaged securely for warehouse distribution, our anti loosening Nylock screws meet international standards and batch traceability. If you’re seeking affordable, dependable fasteners with consistent performance, we invite you to request a sample or connect for a formal quote. We’ll guide you through bulk discounts and delivery options—Cheap, reliable, and ready to install.
Anti-loosening nylock screws are designed to maintain clamping force under vibration, making them ideal for electronics, automotive, and machinery assemblies. The nylon insert locks the threads and deforms to create a secure preload, resisting loosening without damaging mating surfaces. This yields predictable torque-tension behavior, good corrosion resistance with proper coatings, and lower maintenance across the life cycle. For global procurement, the emphasis is on consistent dimensions, clear standards (ISO/DIN/ANSI), and reliable, scalable supply. As a market leader in anti-loosening fasteners, we offer wide material options, rigorous QC, and scalable production to meet varied applications. Our global logistics support short lead times, flexible MOQs, and traceability documentation to ease site qualification. Whether you need stainless steel, alloy, or coated variants, we align with your quality requirements and certifications. Choose a supplier that prioritizes reliability, performance, and on-time delivery to keep critical assemblies secure across markets.
| Rank | Size Range | Material | Finish / Coating | Strength Grade | Thread Type | Certifications | Operating Temp (°C) | Typical Applications |
|---|---|---|---|---|---|---|---|---|
| 1 | M3–M6 | Stainless Steel 304 / A2-70 | Passivated / Zinc plated | A2-70 / 8.8 | Coarse | RoHS, REACH | -40 to 120 | Electronics enclosures, small mechanical assemblies |
| 2 | M5–M8 | Carbon Steel 8.8 | Zinc Plated | 8.8 | Coarse | ISO 9001, RoHS | -40 to 150 | Automotive interiors, machinery frames |
| 3 | M8–M10 | Stainless Steel 316 / A4-70 | Passivated | A4-70 | Coarse | RoHS, REACH | -40 to 130 | Marine equipment, outdoor electrical housings |
| 4 | M4–M12 | Alloy Steel 10.9 / Stainless 304 | Zinc + Yellow Chromate / Black Oxide | 10.9 | Fine / Coarse | ISO 9001 | -40 to 120 | General heavy-duty mechanical assemblies |
| 5 | M6–M12 | Carbon Steel 10.9 | Black Oxide | 10.9 | Fine | RoHS | -40 to 120 | Heavy machinery, construction equipment |
| 6 | M12–M20 | Stainless Steel 316 | Passivated | A4-70 | Coarse | RoHS, REACH, ISO 9001 | -40 to 130 | Industrial equipment, offshore installations |