DC Anti Vibration Rail Nuts

DC anti‑loose nuts by Guangdong Fengheng are core fasteners for high‑speed rail and bullet trains, securing safety under extreme vibration and impact. Adopting patented concentric clamping dual‑nut structure, they lock bolts uniformly to avoid loosening, with residual axial force retention over 91% in vibration tests. Made of high‑strength alloy with anti‑corrosion treatment, they resist harsh conditions and support repeated reuse. Widely used in track fasteners, switch gears, bridge connections and bogie bolts, they boost stability, cut maintenance and ensure reliable long‑term operation for high‑speed trains.

【Advantage】

• Fast&easy to install&dismantle with common tools.

• No additives required.

• Never loose.

• Reuse.

• Save maintenance cost.

• Upgrade product.

【Benefit】

• Don’t need to repeat the purchase every cycle.

• Don’t need to stop operation due to the loosing out of the nuts.

• Don’t need to replace nuts every cycle.

• A minor change in your design, a big upgrade in your product.