What is the size of the joy con external screws?
Im looking to replace the triwing screws with Philips screws so i need to know the size to get the proper replacement.
Is that the tri-wing in step #5 of this guide? Do you still have the screw?
You can use a digital clap to measure it or just drop by some old repair guy, show him the screw and ask. He might charge you $5.
Better yet, send a good looking girl friend to the old guy, he'll bend over backwards to help her. Old techs are lonely and don't get to see or smell many young girls.