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The Würth #8 x 2-1/4" flat head assembly screw is built for cabinet carcass construction, drawer box assembly, and panel-to-panel joinery where a longer screw is needed to reach through a face panel and bite firmly into the substrate behind it. A Type 17 Auger point, coarse thread, milling nibs, and #2 square drive combine in a single screw designed to seat cleanly and hold reliably in wood, plywood, and engineered panels.
At 2-1/4 inches, this screw spans a 3/4" panel face and still delivers over 1-1/2 inches of thread engagement in the member behind it. That combination is well suited to cabinet box assembly: fastening a back panel through a side, securing a bottom to a side panel, or running a cleat through a substrate and into framing. The length also works for drawer box construction in thicker stock, attaching stretchers to legs in case furniture, and similar joints where a shorter screw would leave too little thread in the receiving piece to hold under load. For shops building face-frame cabinets or RTA carcasses at volume, having this length on hand covers the joints that a 1-1/2" or 2" screw cannot reach reliably.
The Type 17 Auger point is an extended fluted tip that pulls wood fibers out of the path of the thread rather than pushing them aside. In dense plywood or particleboard, this means less resistance at the tip and less tendency to split material near edges or corners. The coarse thread follows with wide, deep engagement suited to the fiber structure of engineered panels. As the flat head approaches the surface, the milling nibs undercut a clean countersink, so the head finishes flush without tearing the face veneer or laminate. The result is a screw that goes in cleanly, seats predictably, and holds without backing out under the movement and racking loads a cabinet carcass sees in daily use.
A 2500-piece pail is sized for operations that go through assembly screws fast: cabinet manufacturers running production lines, millwork shops assembling carcasses in batches, and commercial installers finishing multi-unit projects. The pail format makes it easy to keep a supply at the assembly station or carry a day's worth to the job site without managing individual boxes. The #2 square drive is the standard bit already in most cordless drivers on the shop floor, so there is no bit changeover slowing the line. This screw is for interior wood assembly. For outdoor or pressure-treated applications, choose a screw with a corrosion-resistant coating rated for that exposure.
This length passes through a standard 3/4" panel and still delivers more than 1-1/2" of thread into the receiving member. That thread engagement is what keeps the joint from pulling apart under the racking and load cycles a cabinet carcass experiences over time. A shorter screw may not reach far enough into the second piece to hold reliably.
In most wood-based panels — plywood, particleboard, MDF — the nibs cut a clean seat as the flat head is driven home, so a separate countersink step is not required. In very hard or thin face materials, a pre-drilled countersink can help the head seat without surface tear-out.
Yes. Square drive and Robertson drive refer to the same geometry. A standard #2 square or Robertson bit fits this screw. The recess is designed to hold the screw on a correctly sized bit, which helps with placement in tight carcass interiors where the other hand is holding a panel in position.
The Type 17 Auger point and coarse thread perform well in softwood and engineered panels. In dense hardwoods like maple or oak, a fine-thread screw with a pilot hole is typically the better choice to avoid splitting and get adequate holding power. This screw is optimized for the panel materials common in cabinet carcass construction.
No. The zinc finish provides protection for dry indoor environments. Exterior use, high-humidity areas, or contact with pressure-treated lumber calls for a screw with a coating rated for that exposure.
When the joint demands more reach than a standard short screw provides, the Würth #8 x 2-1/4" assembly screw delivers the thread engagement to hold it — driven cleanly, seated flush, and ready in the quantity a working shop actually needs.
Sold In: 2500 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
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 |