Grass 830-50 Nickel mounting plate.
The Grass 830-50 Nickel Mounting Plate is also the closest plate to replace your broken 830-40 mounting plates. The 830-40 has an overlay of 1 1/2" while the 830-50 is 1 7/16". The Grass hinge has enough adjustment to overcome the 1/16" difference between the two plates.