Coin slot screws

Phillips head screws are designed to not be over tightened The angled slot helps push the screwdriver back out as you continue to torque

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slot bom 88 You can position them say 8 apart, slot between them, then loosen one, slide it closer, tighten, loosen the other and then space them back

slot ball So, your best bet will be to use pliers and unscrew it using pliers, and tighten with pliers as well I would probably find a replacement screw