Hex Nuts Metric M2 M2.5 M3 M4 M5 M6~M24 Grade 12.9 Black Oxide Steel Hex Nuts

Class 12.9 nuts are suitable for fastening most machinery and equipment.

Black-oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments.

The threads of these nuts are all metric coarse threads.

These nuts see photo 2 for detailed dimensions.
The data is a single batch, manual measurement, there are errors!
The color of the photo may have a color difference due to the monitor!