Yes, 1/4" -20 nuts with loose washers. Larger for main body #4801719, small washers for each end where no clearance #4821092, plus the sealing washers #7583551, only came in large. Repro parts pic below.
70-81 rear spoiler fasteners 4801719 large washer nuts 4821092 small washer nuts 7583551 sealing washers all 1 sz by
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