Obscure screw ID needed

I need to ID the type of screw used to hold the switch ID panel to the bottom of the instrument panel???

4 self-tapping screws Part# BD.17503/2. That part number is from the 3.8 Parts LIst. The 4.2 Parts list shows 2 x DAZ.508/8C:


Sometimes the 3.8 Parts List I have does not reflect all the changes during the 3.8 run, so the 4.2 Part may actually have been fitted to later 3.8s. Iā€™m puzzled by the 4.2 list only showing 2 screws, as my 4.2 has 4 holes and 4 screws.

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Thats basically what I used but was concerned they might be machine threads, thanks