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    Screws
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    Item # WW37160-PAIL • Mfr # 3670000355961 5000

    Würth #8 x 1-1/4" Flat Head Assembly Screw Square Drive - Type 17 Auger Point Coarse Thread Black, 3670000355961 5000 - 5000/Box

    Description

    Wurth Flat Head Assembly Screw For Wood Joints

    Wurth #8 x 1-1/4 flat head assembly screw gives you a case hardened fastener with a coarse thread, so it bites firmly and resists head damage when driven into typical woodworking materials. The flat head profile seats flush in countersunk holes, which keeps cabinet and furniture surfaces smooth for tight joints and clean finishes. The square drive design matches #2 square drive bits, which helps transfer driving torque directly into the screw head for positive engagement in repetitive assembly work. The coarse thread pattern is designed to advance quickly through material, which supports faster driving in production runs and common shop setups. The black finish defines the specific version you are selecting by color, which helps keep projects visually consistent when exposed heads are part of the design.

    Key Screw Details That Support Daily Work

    • The #8 shank size defines a familiar diameter, which fits common pilot holes and lets you match this screw to many existing drilling and driving setups in the shop.
    • The 1-1/4 inch length sets the penetration depth, which helps you select this screw when you need solid hold through typical face frames, cabinet sides, or similar stock thicknesses.
    • The coarse thread form runs along the shank to pull parts together quickly, which supports strong clamping between pieces during cabinet, furniture, or fixture assembly.
    • The flat head sits down into countersinks, which lets joined parts close up tightly and keeps surfaces ready for hinges, slides, or other hardware to mount flush.
    • The square drive head works with #2 square drive bits, which gives the driver bit a positive seat in the recess so torque transfer stays consistent during repeated fastening.
    • The black finish identifies this screw variant by color, which allows you to maintain the same appearance wherever the head is visible across a project.

    Installation Behavior Of This Type 17 Screw

    This screw uses a type 17 auger point, which starts the hole and clears material as it advances so the tip enters wood efficiently while reducing resistance at the entry point. The coarse thread carries up from the point, which continues to move chips along the thread path as the screw is driven for a firm pull-down of parts. The flat head geometry is designed for countersunk holes, which allows you to drive the screw until the head seats snugly at the surface without standing proud. Because it is driven with #2 square drive bits, the bit flank seats cleanly in the recess, which supports straight driving and reduces cam-out forces during installation.

    Using This Wurth Assembly Screw In Projects

    Where This Coarse Thread Screw Fits Best

    This screw is a #8 x 1-1/4 inch coarse thread fastener, which lines up well with many cabinet, furniture, and fixture assemblies that rely on typical sheet goods and solid stock thicknesses. The case hardened construction provides a hardened outer shell, which supports the head and drive recess while driving into dense areas of material. The flat head form makes it suitable wherever a countersunk fastener is needed, which works well in face frames, carcases, and structural rails that rely on flush surfaces. The black finish gives a defined color option, which matters when the screw head will remain visible on dark components or fittings.

    Details That Support Repeatable Fastening Results

    The type 17 auger point design combines a cutting tip and chip space, which lets the screw tip start into wood with less wandering so alignment stays close to the intended layout line. Coarse threads along the #8 body advance quickly, which helps pull joint faces tight with fewer driver rotations during repetitive assembly. The #2 square drive interface gives the driver bit a stable four-wall engagement, which reduces slippage at the head and helps preserve both the recess and the bit over multiple drives. Case hardened construction strengthens the surface of the shank and head, which helps the screw hold its drive shape and thread form during installation in normal woodworking environments.

    Common Questions About This Wurth Screw

    What type of screw is the Wurth 3670000355961 5000?

    The Wurth 3670000355961 5000 is a #8 x 1-1/4 inch flat head assembly screw with coarse thread, so it serves as a general-purpose fastener for structural and assembly joints in woodworking projects.

    How does the type 17 auger point help during installation?

    The type 17 auger point cuts and clears wood at the tip, which lets the screw start more easily and advance with less driving resistance in common shop materials.

    Which driver bit works with this square drive screw?

    This screw uses a square drive head that matches #2 square drive bits, so the bit fits solidly into the recess for consistent torque transfer while driving.

    Why choose a flat head screw for cabinet or furniture joints?

    The flat head is designed to sit flush in a countersunk hole, which keeps joint surfaces smooth so adjacent components and hardware mount cleanly.

    What does coarse thread mean for this #8 x 1-1/4 screw?

    The coarse thread on this screw advances rapidly through material, which helps pull pieces together firmly and supports strong holding power in typical wood substrates.

    How does case hardened construction affect screw performance?

    The case hardened design gives the screw a hardened outer surface, which helps the head and drive recess resist wear during repeated driving in woodworking tasks.

    Selecting This Screw For Your Next Assembly

    The Wurth #8 x 1-1/4 flat head assembly screw with coarse thread, type 17 auger point, and square drive combines familiar dimensions with installation-focused features that support repeatable fastening. When a flat head profile, #2 square drive engagement, and case hardened construction match your cabinet or furniture assembly steps, this black screw provides a defined option for that role. Choose this configuration when its size, head style, drive type, and thread design align with the joints and materials you are building.

    Catalog
    P-9
    Color/Finish
    Black
    Gauge
    8
    Length
    1-1/4 in
    Thread
    Coarse thread
    With Nibs
    Yes
    Point Type
    Type 17 Auger
    Head Type
    Flat head
    Drive Size
    #2
    Drive Type
    Square
    Product Type
    Assembly Screw
    Number of pieces
    5000
    Supplier Pack Size
    5000
    Sold In
    5000
    Catalog
    P-9
    Color/Finish
    Black
    Gauge
    8
    Length
    1-1/4 in
    Thread
    Coarse thread
    With Nibs
    Yes
    Point Type
    Type 17 Auger
    Head Type
    Flat head
    Drive Size
    #2
    Drive Type
    Square
    Product Type
    Assembly Screw
    Number of pieces
    5000
    Supplier Pack Size
    5000
    Sold In
    5000
    1 in1-1/4 in1-1/2 in1-5/8 in1-3/4 in2 in2-1/4 in2-1/2 in3 in
    1000200025003000350040004800500055007000900011000
    Würth

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