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    Screws
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    Item # WW39252 • Mfr # 3670000171961 4000

    Würth #8 x 1-3/4" Flat Head Assembly Screw Square Drive - Sharp Point Coarse Thread Lubricated, 3670000171961 4000 - 4000/Box

    Description

    #8 X 1-3/4 Flat Head Assembly Screw Use

    #8 x 1-3/4 flat head assembly screw describes a Wurth screw sized for typical woodworking and cabinet assembly, so installers get a familiar fastener dimension for joining standard stock in shop and jobsite work. The flat head design lets the screw sit flush in a countersunk hole, which helps panels draw tight without a raised head interfering with hinges, slides, or trim. A sharp point lets the screw start into material quickly, which speeds repetitive driving in cabinet carcasses, stretchers, and face frame components. The coarse thread is designed to bite aggressively, which helps pull parts together firmly in common woodworking substrates. This assembly screw belongs to the Wurth Baer Supply fasteners range, giving buyers a part that aligns with other screws they already use from the same source. The assembly focus means this fastener suits production-style fastening where consistent driving is important.

    Key Details That Support Assembly Work

    • The screw size of #8 x 1-3/4 inch sets a balanced combination of strength and length, which suits many cabinet and furniture joints where a compact yet solid fastener is preferred.
    • The flat head form allows the screw to sit below the work surface after countersinking, which helps hardware, trim, or panels fit over the joint without interference from the head height.
    • The sharp point detail lets the screw pierce wood or similar materials without extensive pre-drilling, which can shorten assembly time during repetitive builds and installations.
    • The coarse thread pattern engages material with fewer turns, which helps pull pieces together quickly and can feel more secure in typical woodworking substrates.
    • The assembly screw classification signals a role in joining components, which helps buyers match this part to tasks like building cabinet boxes, fixtures, or jigs in the shop.

    Installation Behavior And Drive Interface

    This Wurth screw uses a square drive that works with #2 square drive bits, so drivers and impact tools can engage the recess securely during installation and reduce slipping during torque. Square drive engagement helps transmit driving force directly into the screw, which is useful in harder materials where more torque is needed to seat the head. The length of 1-3/4 inch supports joints where the screw must cross one piece and still have bite in the second, aligning with many cabinet and fixture layouts. A coarse thread combined with a sharp point lets the screw advance positively as the driver turns, which can help maintain alignment when pulling together carcass parts or cleats. The assembly role of this screw fits workflow where installers move from hole to hole with the same bit and drive setting.

    How This Wurth Screw Fits Woodworking Tasks

    Assembly Screw Performance In Wood Projects

    The Wurth #8 x 1-3/4 inch flat head assembly screw is defined with a coarse thread, which works to grip into many wood-based materials used in cabinetry and shop projects. The sharp point aids in starting into these materials, so installers can place screws accurately along edges or into narrow components. Because this size is a common choice in woodworking, it fits many cabinet side-to-stretcher or rail-to-panel joins where over-penetration would be a concern with longer screws. The flat head suits countersunk holes drilled with standard bits, which lets the head draw down flush into the material and supports tight joints around hardware mounting zones. As part of the screws category at Wurth Baer Supply, this part sits alongside related fasteners that woodworkers use daily.

    Construction Details That Support Repeatable Results

    The screw is case hardened per the description, which affects how the fastener behaves under driving torque and when clamping parts together. Case hardening changes the outer layer characteristics of the screw, which supports resistance to head deformation at the drive recess when using #2 square drive bits. This helps the square recess stay usable through repeated drives, which is useful if bits are also being reused on multiple fasteners in production runs. The note that 3/4 and 1 inch lengths in this series are fully threaded while other sizes are threaded two-thirds from the bottom explains how this 1-3/4 inch version follows the partial thread pattern. That two-thirds thread layout leaves a non-threaded shank length near the head, which allows the screw to draw the top piece tight against the lower piece as the coarse threads bite only in the receiving workpiece. The SAP description listing CRS, SQ flat head, and LUB indicates a lubricated surface in this case hardened screw, which works to reduce driving friction as the coarse thread advances. Lower friction during driving can support smoother seating of the head without over-torquing, which is helpful when working close to finished surfaces. The manufacturer part number 3670000171961 4000 ties this specific combination of size, drive, head style, and lubrication to a single ordering reference, which supports consistent reordering when the same performance is required across jobs.

    Common Questions About This Wurth Screw

    What type of screw is the Wurth #8 x 1-3/4 inch?

    The Wurth #8 x 1-3/4 inch fastener is a flat head assembly screw with a coarse thread and sharp point, so it is suited to joining components in woodworking and cabinet-style construction.

    Which driver bit fits this Wurth assembly screw?

    This Wurth assembly screw uses a square drive recess and is specified to work with #2 square drive bits, so installers can use common drivers that match this bit size.

    How is the thread configured on this 1-3/4 inch size?

    In this Wurth series, sizes longer than 1 inch are threaded two-thirds from the bottom of the screw, so the 1-3/4 inch version uses a partial-thread layout below the head.

    What does case hardened mean for this screw?

    This screw is described as case hardened, so its outer surface is treated to influence hardness, which supports the drive recess and shank under installation torque.

    Why is the coarse thread important on this assembly screw?

    The coarse thread on this assembly screw is designed to engage material quickly, which helps pull woodworking components together during cabinet and fixture assembly work.

    What is the role of lubrication on this Wurth screw?

    The SAP description notes this screw as lubricated, so the surface treatment is intended to reduce friction during driving, which can support smoother seating and consistent torque.

    Selecting This Screw For Assembly Tasks

    The Wurth #8 x 1-3/4 inch flat head assembly screw with coarse thread, sharp point, and #2 square drive bit interface brings together details that suit many woodworking and cabinet assembly joints. Case hardened construction and lubrication support driving performance when pulling parts tight. The partial threading pattern in this length aids clamping across two joined pieces, helping them draw together as torque is applied. For projects that match this size, drive style, and thread behavior, this Wurth Baer Supply screw offers a defined, repeatable fastener choice tied to manufacturer part number 3670000171961 4000.

    Catalog
    P-9
    Color/Finish
    Lubricated
    Gauge
    8
    Length
    1-3/4 in
    Thread
    Coarse thread
    With Nibs
    No
    Point Type
    Sharp
    Head Type
    Flat head
    Drive Size
    #2
    Drive Type
    Square
    Product Type
    Assembly Screw
    Number of pieces
    4000
    Supplier Pack Size
    4000
    Sold In
    4000
    Catalog
    P-9
    Color/Finish
    Lubricated
    Gauge
    8
    Length
    1-3/4 in
    Thread
    Coarse thread
    With Nibs
    No
    Point Type
    Sharp
    Head Type
    Flat head
    Drive Size
    #2
    Drive Type
    Square
    Product Type
    Assembly Screw
    Number of pieces
    4000
    Supplier Pack Size
    4000
    Sold In
    4000
    1 in1-1/4 in1-1/2 in1-3/4 in2 in2-1/4 in2-1/2 in3 in
    1000150025003000350040005000750010000
    Würth
    $240.00/4000 Each
    $0.06 /Each
    Würth #8 x 1-3/4" Flat Head Assembly Screw Square Drive - Sharp Point Coarse Thread Lubricated, 3670000171961 4000 - 4000/Box
    Item# WW39252 / MFR Part # 3670000171961 4000
    Each
    Each
    In Stock

    Sold In: 4000 Each

    Each

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