Class 10.9 non-serrated flange (frame) bolts are commonly used in applications where a wide bearing surface is needed to distribute the load and prevent damage to the connected materials. Some common applications include:

  1. Automotive Industry – Used in engine assemblies, transmission systems, and exhaust systems due to their ability to resist loosening from vibration.
  2. Construction and Structural Engineering – Securing steel frameworks, bridges, and heavy equipment.
  3. Plumbing and Piping – Used to fasten flanges in pipelines, ensuring secure connections in water, gas, and chemical systems.
  4. Heavy Machinery and Equipment – Common in industrial machinery and agricultural equipment for high-strength fastening.
  5. Aerospace Industry – Used in aircraft assembly where vibration resistance is crucial.
  6. Electrical and Power Plants – Fastening components in turbines, generators, and other electrical equipment.

Their built-in washer design helps distribute pressure, making them ideal for high-stress and high-vibration environments. Coated in zinc phosphate and oil to withstand 72 hours until the appearance of red rust.

Non-Serrated
Finish
: Zinc Phosphate & Oil
Dimensional Spec:  DIN 6921
HTS Code: 7318.15.80.69

RoHS Compliant: ✔
REACH Compliant: ✔
Prop 65 Compliant: ✔
TSCA Compliant: 
✔
Conflict Mineral Free: 
✔
PFAS Free:
 ✔

72 Hours to Red Rust