The M8 hex coupling nuts include four different types, which can meet your needs, besides, they will be great replacement for industrial and construction fasteners.
These coupling nuts are made of zinc plated carbon steel with high strength.
M8 long rod nuts adopted hex shape which has 6 sides that gives a good granularity of angles for a tool to approach from.
Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from.
The rod studding hex are used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry.