Locking Nut 810W90685-0303 Sinotruk Sitrak

Product Introduction

This precision-engineered slotted locking nut is a critical fastener for heavy-duty truck drivetrains and wheel-ends. It delivers a high clamping force and, when paired with a cotter pin, ensures components like the differential drive pinion or wheel hub bearing remain securely locked and under precise preload, even under extreme operating conditions.

Structure & Material

• Material: High-tensile alloy steel (10.9 grade), heat-treated for superior tensile strength and fatigue resistance. The surface features a black oxide coating for corrosion protection.

• Design: A heavy-duty slotted nut with precision internal threads and external locking slots. The slots align with a drilled hole in the shaft, allowing a cotter pin to be inserted to prevent loosening from vibration.

Performance

• High Clamping Force: The 10.9-grade steel provides a high preload to maintain precise bearing preload or component alignment.

• Vibration Resistance: The slotted design, when used with a cotter pin, creates a permanent lock that prevents loosening, even under intense road vibration.

Durability

• High-tensile alloy steel resists stretching, shearing, and fatigue under continuous heavy loads and shock impacts.

• The black oxide coating protects against environmental corrosion, extending the nut’s service life in harsh operating conditions.

Core Function

1. Component Securement: Provides a high-preload clamp for critical drivetrain and wheel-end components.

2. Anti-Loosening Lock: The slotted design works with a cotter pin to prevent vibration-induced loosening.

3. Preload Maintenance: Maintains precise bearing preload to ensure optimal performance and longevity of components like the differential drive pinion.