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The Dongfeng Truck Nuts Series is a comprehensive range of high-strength fasteners engineered to meet the rigorous demands of Dongfeng commercial vehicles, including cargo trucks, dump trucks, buses, and military/special-purpose vehicles. These nuts are critical components in securing chassis, suspension, steering, engine, and transmission systems, ensuring safety, reliability, and durability under heavy-load and high-vibration conditions. Manufactured to Dongfeng’s OEM specifications, this series offers a variety of sizes, materials, and thread types to suit diverse applications.

Key Applications

• Vehicle Systems:
  • Chassis & Suspension: Wheel hubs, leaf springs, shock absorbers, and steering knuckles.
  • Engine & Transmission: Mounting brackets, gearbox casings, and exhaust systems.
  • Body & Cabin: Cabin mounts, door hinges, and accessory brackets.
• Compatible Dongfeng Models:
  • EQ140, EQ145, EQ153, EQ1168, EQ1250, EQ2102, and other medium- to heavy-duty trucks.
• Industrial Use:
  • Fleet maintenance, aftermarket upgrades, and custom vehicle modifications.

Technical Specifications

1. Materials & Coatings:
   • High-Strength Steel:
     • Grade 8.8, 10.9, or 12.9 (ISO 898-1 standard) for critical load-bearing applications.
     • Chemical Composition: Carbon (C), Chromium (Cr), Molybdenum (Mo), and Vanadium (V) for enhanced strength and toughness.
   • Stainless Steel (Optional):
     • Grade 304 or 316 for corrosion-resistant applications (e.g., marine or coastal environments).
   • Surface Finishes:
     • Zinc Plating (Yellow/White): Salt spray tested for 240–720 hours (ASTM B117).
     • Dacromet Coating: For superior corrosion resistance (up to 1,000 hours salt spray).
     • Black Oxide: For interior components requiring minimal friction.
2. Thread Types & Sizes:
   • Metric Threads: M8, M10, M12, M14, M16, M18, M20, M22, M24 (fine and coarse pitch).
   • UNF/UNC Threads: 5/16″, 3/8″, 1/2″, 9/16″, 5/8″ (for legacy or specialized applications).
   • Thread Length: 10–60 mm (0.39–2.36 inches) (varies by model).
3. Nut Types:
   • Hex Nuts: Standard 6-sided design for general use.
   • Flange Nuts: Integrated washer face for load distribution (e.g., wheel hubs).
   • Nylock Nuts: Nylon insert for self-locking (vibration resistance).
   • Weld Nuts: For attaching brackets to chassis frames.
   • Castle Nuts: Used with cotter pins for safety-critical applications (e.g., steering components).
4. Performance Ratings:
   • Proof Load: 640–1,220 MPa (93,000–177,000 psi) (depending on grade).
   • Tensile Strength: 800–1,400 MPa (116,000–203,000 psi).
   • Operating Temperature: -40°C to +200°C (-40°F to +392°F).
   • Vibration Resistance: Passes 1,000+ cycles of Junker-type vibration testing (for Nylock variants).