identify this screw
 

here's one to stump the experts: I need a part number (or at least a model and application) for the pictured black wafer-head screw 10mm diameter x 10mm length. the fellow who gave it to me swears it's a Lexus part (and he's a body guyI believe him), but the local parts counter has no clue. I'd really appreciate the help. thanks.

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