Hi Tim, The handle is drilled and countersunk for 1/4 in fillister head or No. 12 self-tapping screws
Please call our sales floor directly at 1.800.447.4941 for further assistance with placing this special order request.
You will need to look at the number on the back of the handle in order to get the correct Kason replacement. Please ask another question with the number on the handle included and I will do my best to find you the correct replacement door handle for your Harford walk-in.