Use this Screw Comparison Chart to comes courtesy of Rockler.com. Check out their site for info and products for building decks, sheds, arbors, outdoor furniture…
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Application: Composite decking material. |
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Less mushrooming in composite decking. |
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Head: Flat Undercut Head |
Thread: Dual thread design for optimum holding power. |
Size: #10 |
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Application: Pressure-treated decks, siding, spas, barns, metal buildings, bridges, gazebos. |
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Corrosion resistant. Auger point for extra fast start. |
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Head: Bugle head with flat head |
Thread: Coarse thread |
Size: #8, #10 |
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Application: Cedar decks, seaside applications |
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Small heads are perfect for low profile. Corrosion resistant. |
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Head: Trim Head |
Thread: Coarse Thread |
Size: #7 |
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Application: Decks, outdoor furniture |
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Durable Ultra Seal finish for tough exterior conditions. Rated 500 hrs of salt spray protection. Not recommended for ACQ pressure treated lumber. |
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Head: Flat Head |
Thread: Serrated Deep Thread |
Size: #8, #10 |