Thanks Ken,I doubt anyone here knows the screw size. I'd try contacting the manufacturer, if you haven't already.
"Several"Some how I've lost several handle screws and can't find any data on the screw sizes
Something is telling me not in a book store or grocery.or where to buy new ones.
The best thing about Torx screws is there is no metric or imperial confusion. They are just Torx. So; if you need a T6 screw driver to unscrew your screw that means you need to buy T6 screws. All you need is to measure the length. You can also buy longer screws and trim (cut) them to a proper length.Take one of the screws that remain to a hardware store that has screw gauges for size as well as threading.