Metric DIN 6923 Hex Serrated Flange
Steel Class 8 Zinc
Steel Class 8 Zinc Black
Steel Class 6/8/10 Nickel
Steel Class 10 Zinc
Steel Class 8 Black Oxide
Steel Class 8 Zinc Yellow
Stainless Steel A2 70
Steel Class 10 Zinc Yellow
Steel Class 10 Zinc Black
Steel Class 8 Black Phosphate - Large Flange
Tensil Lock Steel Class 90 &100 Black Phosphate