triangular cap near quarter light, what screws needed?

[xpress]

hi there. i could take off a screw from the other side but thought some bright spark might know this already, what screws do i need (one either side) for the triangular steel cap that goes over the front quarter light window to seal the rubber and the hole? also there's two bigger screws going in around here, don't know what they hold anyone likewise know what to ask for at the ironmongers?

thank you.

[aupickup]

the 2 bigger screws are cross head bolts that adjust the friction on the quarter light