It’s a low small head socket cap screw.
https://uk.misumi-ec.com/vona2/detail/221000551231/?rid=rid1
You're a star!
I've probably got some spares that take a 2mm knocking about if you want some, defo throw loads away because if the pads have 2.5mm or Phillips heads I reuse them because the 2mm are prone to rounding off.
@atk started
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It’s a low small head socket cap screw.
https://uk.misumi-ec.com/vona2/detail/221000551231/?rid=rid1