Tile fastners shall have a head diameter of no less than ___________ inches.

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Tile fastners shall be corrosion resistant and not less than 11-gage, 5/16 -inch (8.0 mm) head, and of sufficient length to enetrate the deck a minimum of 3/4 -inch (19.1 mm) or through the thickness of the deck, whichever is less.

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