NISSAN 38321-06J1A Differential Stud Bolt

This genuine Nissan (SKU: 38321-06J1A) differential stud bolt is a premium quality, high-strength fastener specifically engineered for critical drivetrain applications. The primary function of the differential stud bolt is to ensure precise, displacement-free fastening of the differential housing, cover, or internal components, maintaining structural integrity and proper sealing under heavy mechanical loads and vibrations.

Technical Features and Specifications:

• Material Quality: Specially heat-treated, high-strength alloy steel offering outstanding tensile strength and shear resistance.
• Surface Treatment: Corrosion-resistant coating protecting the fastener against moisture, road salt, and the chemical effects of gear oil.
• Precision Thread: Threads rolled to factory specifications to ensure accurate torque retention and prevent self-loosening.
• Application Area: Differential housing, bearing caps, or drivetrain assembly.

Role of the Stud Bolt and Signs of Wear:

Continuous torque transmission and vibrations during differential operation place extreme stress on fasteners. This genuine Nissan stud bolt ensures that secured components remain firmly seated relative to one another, even under extreme operating conditions.

Typical Symptoms of Wear or Failure:

• Thread damage or thread stretching caused by incorrect torque (overtightening).
• Fatigue cracks on the bolt shank or under-head transition area.
• Oil leaks around differential seals due to insufficient clamping force.

Installation Note: During differential maintenance or repair, studs and fastening bolts must always be tightened to the manufacturer's specified torque values. Stretched or damaged bolts must be replaced to prevent severe damage to the drivetrain.