What are the different units for this part? PTA6043-2015DPB103

Thanks for reaching out! As per our engineers, the different units for B to E correspond to the following:

Unit B is for the panel mounting screw holes on the top surface
Unit C is for the pitch of the first pair of mounting pegs
Unit D is for the pitch of the second pair of mounting pegs
Unit E is for the potentiometer's pitch between pins 1 and 3.

If you need more assistance, don't hesitate to reach out!

Have a nice day,
Ron