Machine screws, Flat, 5/16"
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Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drive is x-shaped for installation with a Phillips screw driver.
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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 18-8 black oxide finish
A corrosion resistant steel alloy. The most common stainless steel for general hardware use. A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.
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Stainless steel 316
A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Flat heads are countersunk (cone shaped under the head) with a flat top. Slotted drive has a simple slot for a flat bladed screw driver.
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Flat heads are countersunk (cone shaped under the head) with a flat top. Star drive is a Torx® compatible drive, designed to minimize the risk of cam-out (stripping).
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