shackles
the eye of a leaf spring, assuming u mean the eye at end of spring, is used to bolt the spring to the vehicle
The amount of curvature given to the leaf and observed from the main leaf upto the point just below the centre of the either of the end eyes of the spring.
Leaf.
Leaf.
Leaf
Leaf
Leaf
Leaf.
Leaf 🍃
Should have one fairly thick leaf spring. The spring is fiberglass.
It is called the tip or the apex.
The front end is bracketed to prevent shifting of the axle. The rear is shackled, so that as pressure is exerted and removed, and the spring exspands and retracts, it will have room to move.