Bolt holding hoses to back bracket of R4 compressor

[cook]

On the W123 R4 compressor, there is a bolt that runs the length of the compressor and screws into the back of it. It also holds a bracket that is for the hoses. The bracket should have 2 bolts in it to that stabilize the hoses. Does anyone know what size those bolts should be? (Thread size and length) Mine are gone.