Machine screws
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Pan heads are slightly rounded with short vertical sides. Phillips drive is x-shaped for installation with a Phillips screw driver.
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Pan heads are slightly rounded with short vertical sides. Star drive is a Torx® compatible drive, designed to minimize the risk of cam-out (stripping).
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Pan heads are slightly rounded with short vertical sides. Spanner (a.k.a. snake eyes) is a tamper resistant drive that requires a special driver to install.
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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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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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Flat heads are countersunk (cone shaped under the head) with a flat top. Spanner (a.k.a. snake eyes) is a tamper resistant drive that requires a special driver to install.
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Flat heads are countersunk (cone shaped under the head) with a flat top. Star pin-in is a tamper resistant drive that requires a special driver to install.
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Oval heads are countersunk (cone shaped under the head) with a rounded top. Phillips drive is x-shaped for installation with a Phillips screw driver.
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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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Oval heads are countersunk (cone shaped under the head) with a rounded top. Spanner (a.k.a. snake eyes) is a tamper resistant drive that requires a special driver to install.
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Truss heads are wide with a low profile rounded top. Phillips drive is x-shaped for installation with a Phillips screw driver.
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Truss heads are wide with a low profile rounded top. Slotted drive has a simple slot for a flat bladed screw driver.
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Truss heads are wide with a low profile rounded top. Combination drive can be used with either a flat bladed or Phillips screw driver.
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Truss heads are wide with a low profile rounded top. Star drive is a Torx® compatible drive, designed to minimize the risk of cam-out (stripping).
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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.
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Round heads are domed and look like half of a sphere. Combination drive can be used with either a flat bladed or Phillips screw driver.
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Round heads are domed and look like half of a sphere. One way drive is installed with a flat bladed screw driver but cannot be removed without special tools.
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Button heads are rounded and low profile. Star pin-in is a tamper resistant drive that requires a special driver to install.
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Sidewalk bolts have a wide, low profile head and are often used in hurricane shutter installation. Slotted drive has a simple slot for a flat bladed screw driver.
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Sidewalk bolts have a wide, low profile head and are often used in hurricane shutter installation. Combination drive can be used with either a flat bladed or Phillips screw driver.
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