TOYOTA 91674-80820 Flange Bolt with Washer

This genuine Toyota (OEM: 91674-80820) flange bolt with integrated washer is a premium-quality factory fastener designed specifically for the secure and durable assembly of vehicle structural and mechanical assemblies. The integrated flange and washer design ensures optimal load distribution, minimizing surface damage to fastened components and preventing loosening caused by vibration.

Technical Specifications and Benefits:

• Manufacturer: TOYOTA (Genuine OEM part)
• Part Number: 91674-80820
• Type: Flange bolt with integrated washer (Bolt, Flange w/Washer)
• Material Quality: High-strength, heat-treated steel alloy resistant to high shear and tensile forces.
• Surface Treatment: Specialized anti-corrosion coating that protects the bolt from moisture, road salt, and other environmental influences.
• Design: The integrated washer provides a larger contact surface area, evenly distributing clamping force and protecting the mounting surface against scratching during assembly.

Role and Importance of the Fastener:

Flange bolts used in motor vehicles are critically important for safety. They ensure the rigid, secure fastening of various subassemblies (such as engine bay accessories, suspension components, or body panels) without displacement. Factory OEM specifications guarantee precise thread pitch, proper tensile strength, and a perfect fit, preventing thread stripping or breakage often associated with improper aftermarket bolts.

Common Signs of Wear or Failure:

• Thread Damage: Tightening with improper torque (overtightening) can lead to thread stretching or stripping.
• Corrosion: Rust appearing after surface coating damage weakens the bolt material, which can ultimately lead to breakage.
• Deformation: Bolt head or shank bending as a result of severe mechanical impact or an accident.

For safe operation, it is recommended to replace damaged, corroded, or stretched mounting bolts with new genuine factory parts during any maintenance or component replacement.