Socket flat head, 3-1/2"
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Material
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Stainless steel 18-8
A corrosion resistant steel alloy. The most common stainless steel for general hardware use.
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Stainless steel 316
A corrosion resistant steel alloy. A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments. More expensive than 18-8.
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Alloy steel black oxide finish
A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.
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