I don’t know the manufacturer

Hi there. We recognize this pivot shoe. It looks very similar to our 15-087 which uses coil springs. Unfortunately, I can not say the same for your pivot bar because it is still installed and it makes it difficult for us to see the "body" of the part. There is a possibility you may be able to use our 26-089 with 33-096 self-tapping screws. Take a closer look and get back to us with some thoughts.