I fixed it for you...Now, what is the tpi and length of bolt that this handle is part of? It's best to show it apart with all specs, including name of toolpost manufacturer, otherwise we could only guess.
Dave
Note: screw that secures handle to bolt head is not very strong. Use Loctite rather than high torque to hold handle down (can't count how many my coworkers broke tightening the handles back on after they vibrated loose).