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The Würth #8 x 2-1/4" flat head assembly screw is a coarse-thread Phillips drive fastener with a Type 17 auger point, underhead nibs, and a zinc finish. At 2-1/4 inches, it carries enough length to reach through one panel and bite well into a second — making it a reliable choice for cabinet carcass assembly, panel-to-panel connections, and box construction where a shorter screw would leave too little thread in the mating piece.
Shorter screws in the same family are well matched to thin stock and light joinery. The 2-1/4 inch length steps up when the joint asks for more: fastening a 3/4-inch cabinet side into a 3/4-inch back rail, connecting a back panel through a case side, or running a screw through a face-frame nailer and into a cabinet wall. In each of these situations, a longer screw puts more thread into the receiving piece, which translates directly into better pull-out resistance and a tighter, more rigid assembly. Cabinet shops running production carcass work often keep a pail of this length on hand precisely because it covers the joints where a 1-1/2 or 1-3/4 inch screw comes up short.
The Type 17 auger point does two things at once: the sharp tip starts without wandering, and the flute along the point clears wood fibers ahead of the thread, lowering the torque needed to drive the screw. That matters on a production run where the driver is cycling hundreds of times a day. The coarse thread follows behind with deep, widely spaced helices that lock into the fiber matrix of softwood and engineered panels. When the head arrives at the surface, the underhead nibs take over — milling their own countersink in the material so the flat head sits flush and clean. All three elements reduce the extra steps that slow a shop down: no pilot hole needed in most panel materials, no separate countersink, no post-drive cleanup.
Cabinet shops building frameless or face-frame boxes in plywood, MDF, or particleboard will get the most from this length. The 2-1/4 inch reach suits production environments where panels arrive at consistent thickness and the same screw needs to work reliably at joint after joint. Installers assembling site-built cabinetry or furniture components on the job will find it equally useful for through-panel connections that a shorter screw cannot fully engage. This is an indoor fastener — the zinc finish is appropriate for dry, climate-controlled environments, not for exterior or wet-area work.
Pail packaging is convenient for movement around the shop or to the job site. With 2,500 screws per pail, this format suits production cabinet shops and active installers who need continuous access to a consistent fastener rather than stopping to open boxes. The pail keeps the screws contained, easy to reach, and ready to refill a driver tray or organizer without interruption.
The extra length provides more thread engagement in the receiving piece. For joints where a screw passes through a 3/4-inch panel and into a second member, 2-1/4 inches puts significantly more thread into that second piece than a 1-1/2 or 1-3/4 inch screw would, improving pull-out resistance and joint rigidity.
In most softwood, plywood, MDF, and particleboard applications, the auger point's flute clears material ahead of the thread and the screw drives without pre-drilling. In very dense hardwood or close to an edge, a pilot hole reduces the risk of splitting.
As the flat head approaches the surface, the nibs cut small relief channels in the wood fiber around the countersink. This lets the head seat flush without tearing the surface or requiring a separate countersink bit, which saves a step in production assembly.
This is a coarse-thread screw with a flat (bugle-style countersunk) head. It is well suited for attaching a face frame to a cabinet box or fastening softwood and sheet-good panel members together. For hardwood face-frame rail-to-stile joinery, a fine-thread face-frame screw with a washer or pan head is the more appropriate choice because hardwood requires finer threads and a non-wedging head to avoid splitting.
The zinc finish is designed for dry interior use. It is not rated for exterior, high-humidity, or treated-lumber environments. For outdoor work, choose a screw with a corrosion-resistant coating rated for exterior exposure.
A standard #2 Phillips bit. That is the most common driver bit in cabinet shops and on job sites, so no special tooling is required.
When the joint calls for more reach than a shorter screw can deliver, the 2-1/4 inch Würth assembly screw keeps production moving — clean countersink, strong thread engagement, and a drive that works with the bits already on the bench.
Sold In: 2500 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 10 Each |  WW614176461 Mfr# 0614176461005 10 | #2 x 1" Phillips Drive Insert Bit (10/Bag) |