Concrete screws
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Material
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Stainless steel 410
A stainless alloy that is harder than 18-8 stainless steel, but not as resistant to corrosion.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Steel blue coated finish
A hardened steel alloy blue coated for moderate corrosion resistance.
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