#8 x 3 inch flat head assembly screw is a case hardened coarse thread fastener in a black finish, so it handles demanding assembly work while giving a dark, low-profile look where the head sits flush. The flat head design seats into a countersunk recess, which keeps surfaces smooth on cabinetry or fixtures. The square drive works with #2 square drive bits, giving positive engagement that helps reduce cam-out during powered driving. The Type 17 auger point starts into material more easily, which matters when running screws into wood where a cutting point helps penetration. The coarse thread pattern bites aggressively along its threaded section, helping pull parts together in typical assembly tasks. This screw is positioned as an assembly screw, so it fits general fastening roles where a secure hold and predictable driving feel are important.
This assembly screw uses a square drive that accepts #2 square drive bits, so drivers can engage the recess with a bit size that matches the specified drive style. That drive pattern helps transmit torque directly into the screw during powered or manual driving. The product description notes that 3/4 inch and 1 inch lengths are threaded fully, while all other sizes are threaded two-thirds from the bottom of the screw, which means that a 3 inch size uses a partial thread pattern that starts from the tip and runs up roughly two-thirds of the shank. That layout lets the threaded portion grip into the base material while the unthreaded upper section can draw the top piece tight as the screw seats. The Coarse Thread designation ties directly to this lower-threaded section, helping the screw advance quickly through typical assembly materials.
This Wurth flat head assembly screw is listed under Fasteners and Screws, tying it directly to fastening tasks in woodworking and other assembly-focused work. The #8 x 3 inch size positions it as a mid-size fastener that can anchor through one component into a thicker base or frame, giving room for the Type 17 auger point and coarse thread to engage. The note that 3/4 inch and 1 inch options are fully threaded while other sizes are threaded for two-thirds from the bottom sets an expectation that the 3 inch length provides thread concentration in the lower section, suiting applications where the screw must grip solidly into the base material while sliding through the clearance piece above. The black finish supports use where darker fasteners are acceptable on visible faces or along structural framing lines, matching job situations calling for a dark head.
The use of #2 square drive bits is called out directly, so installers can run a drive system that pairs consistently with the screw recess. That pairing matters when running multiple screws, because the square drive helps maintain bit contact and can reduce slippage relative to non-square recess patterns. The Type 17 auger point is highlighted, indicating that the tip is shaped to assist cutting into material during starting. That point style supports a smoother start into typical assembly substrates, which helps when building runs of joints where repeatable engagement reduces wandering at the entry point. The coarse thread designation, combined with the two-thirds threading from the bottom on lengths beyond 1 inch, means that this 3 inch screw pulls primarily through its lower section, letting the unthreaded upper shank help clamp the outer piece as the head seats. In day-to-day assembly use, this combination of flat head, square drive, coarse thread, and Type 17 auger point provides a fastening pattern oriented toward firm draw-down and consistent driving feel.
The screw is #8 x 3 inch, so it offers a familiar diameter with extra length, allowing fastening through a top component into a deeper base material in assembly work.
The screw uses a square drive designed for #2 square drive bits, which provides a positive bit-to-recess fit for controlled driving with powered or hand drivers.
The product notes that lengths other than 3/4 inch and 1 inch are threaded two-thirds from the bottom, so the 3 inch size has a coarse thread focused along its lower shank.
The Type 17 auger point shapes the tip for cutting into material as it starts, helping the screw begin driving smoothly into assembly substrates during installation.
The flat head is made to sit in a countersunk recess, keeping surfaces smoother on cabinetry or fixtures where a flush or low-profile screw head is preferred.
The black finish provides a dark appearance, which can visually blend with darker materials or framing where exposed screw heads remain visible after assembly.
This Wurth #8 x 3 inch flat head assembly screw combines case hardened construction, coarse thread, and a Type 17 auger point to support fastening in assembly roles. The square drive working with #2 square drive bits gives consistent driver engagement across repeated installs. The black finish and flat head profile help it suit situations where a dark, countersunk fastener is appropriate on visible or semi-visible faces. For projects organized around Wurth Baer Supply fasteners, this screw aligns with workflows that call for a mid-length #8 assembly screw with a partial coarse thread and defined drive style.
Quantity | Unit Price | Catalog | ||||
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Sold in: 1 Each |  WW90210 Mfr# 0614176153961 1 | #2 x 1" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90220 Mfr# 0614176139961 1 | #2 x 2" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90230 Mfr# 0614176140961 1 | #2 x 3" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90240 Mfr# 0614176142961 1 | #2 x 4" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90260 Mfr# 0614176143961 1 | #2 x 6" Square Drive Insert Bit, 2 Piece Bit |
Sold In: 2000 Each