The inside handle of my front door has a hole like the picture instead of a screw. At first, I thought I could poke the spring with a thin pin, but that was not the case.
I bought a hex wrench set to find something that fits the hole, but none of the hex wrenches (Allen keys) fit the hole perfectly. The hole is larger than a 2mm Allen key and smaller than a 2.5mm one.
The plate attached to the door cannot be removed because the hole in the plate is narrower than the handle. Could anyone help me with this?