XB-T-69-A
Lock Nut, 1/2-20
SAF-Holland

This high-strength fastener performs the essential role of securing assemblies against vibration and dynamic loads in heavy-duty applications. Designed for a 1/2-20 thread interface, it provides reliable locking action to prevent loosening under harsh road conditions, braking torque, and rough terrain. The robust internal geometry supports repeated cycling and helps maintain clamping force over time, reducing maintenance intervals and the risk of fastener failure. In typical chassis, suspension, or drivetrain configurations, this component serves as a dependable primary retention element, compatible with standard mating parts and mounting surfaces that require a secure, serviceable lock. VMRS coding identifies its function within the critical maintenance and assembly category, aiding inventory management, diagnostic checks, and warranty traceability. While no cross references are listed, the part’s straightforward threading and common sizing facilitate straightforward replacement in a wide range of heavy-truck platforms. The category context reflects a general component used across multiple subsystems, underscoring its versatility in ensuring structural integrity across assemblies exposed to constant vibration and shock. California Prop 65 labeling is included in the detailed documentation, reminding technicians to follow handling and disposal guidelines when replacing this fastener.