Wood screws
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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 316
A corrosion resistant steel alloy. 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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Brass
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.
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Flat heads are countersunk (cone shaped under the head) with a flat top. Frearson drive is x-shaped, similar to (but not compatible with) phillips.
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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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Stainless steel 18-8
A corrosion resistant steel alloy. The most common stainless steel for general hardware use.
-
Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Brass
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.
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Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass. Exact color varies.
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Oval heads are countersunk (cone shaped under the head) with a rounded top. Slotted drive has a simple slot for a flat bladed screw driver.
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Stainless steel 18-8
A corrosion resistant steel alloy. The most common stainless steel for general hardware use.
-
Brass
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.
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Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass. Exact color varies.
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Round heads are domed and look like half of a sphere. Phillips drive is x-shaped for installation with a phillips screw driver.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
-
Brass
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.
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Round heads are domed and look like half of a sphere. Slotted drive has a simple slot for a flat bladed screw driver.
-
Stainless steel 18-8
A corrosion resistant steel alloy. The most common stainless steel for general hardware use.
-
Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
-
Brass
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.
-
Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass. Exact color varies.
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Type 17 screws have an auger point. Countersinking nibs aid in material removal. Flat heads are countersunk (cone shaped under the head) with a flat top. Square drive is designed to reduce the risk of cam-out (stripping) and allow single-handed installation.
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