These are called “crab” nuts.They look like like they should have a split pin but the stub has no holes.
The “fingers” grip the ball joint end and lock them in position.I can assure you they will not come loose.
These are called “crab” nuts.They look like like they should have a split pin but the stub has no holes.
The “fingers” grip the ball joint end and lock them in position.I can assure you they will not come loose.