Lost fixings for hinged bath shower screen

[LukeYew]

Good morning,
I have a hinged shower screen for my bath that I don't have fixings for.

The guide holes in the screen line up with guide holes in the frame - but the holes in the frame are horizontal slots, presumably so that I can adjust the shower screen for a not-quite-vertical wall.

However if I use simple screws to fit it, the shower screen can move freely in the slots and won't be securely fitted.

Has anyone come across this? I can't find suitable fixings anywhere but I might just not know what to look for?

Thanks for any help!

 

[ShaunCorbs]

You want some small self tappers and I’m guessing you haven’t drilled the holes yet (for them ?)