Metric flange nuts, prevailing torque

Material

• Zinc plated class 10.9 steel

  A tempered medium carbon steel. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. A low carbon steel for general use. Zinc plated for moderate corrosion resistance.

• Class 10.9 steel plain finish

  A tempered medium carbon steel. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. A low carbon steel for general use. Unplated finish.