What type of screw do I need for this faucet handle?
Different brands and types use different screw sizes and threads. A &quot;variety pack&quot; probably would be your best bet under the circumstances you describe.
I will say that if you get 6-32, 8-32, and 10-24 x 3/8&quot; and 1/2&quot; long round head brass machine screws you have a pretty good chance of one of them fitting.