The Würth #8 x 2-1/4" flat head assembly screw is built for cabinet box construction, panel joinery, and woodworking applications where a screw needs to pull two workpieces tight and seat flush without a separate countersink step. The Type 17 Auger point, coarse thread, and underhead nibs work together to make that happen cleanly in one pass.
At 2-1/4 inches, this screw reaches deep enough for cabinet box assembly where panels come together at right angles, for attaching solid wood face frames to plywood cabinet sides, and for through-fastening in stacked or doubled material. It bridges the gap between shorter screws that may not get sufficient thread engagement in thick stock and longer screws that over-penetrate in standard 3/4-inch panel work. For shops running 3/4-inch sheet goods with solid wood components, or assembling carcasses from 1/2-inch and 3/4-inch panels in combination, the 2-1/4-inch length lands thread in the second piece with room to spare. This is an indoor screw suited for dry, climate-controlled environments.
The flat head countersinks flush to the surface, which matters in cabinet interiors where a proud screw head would interfere with shelf pins, drawer slides, or finished panel edges. The underhead nibs do the countersink work as the screw is driven, cutting into the wood fiber so the head seats cleanly without tearing or raising grain around it. The Type 17 Auger point goes further than a standard sharp point by adding an extended flute near the tip. That flute pulls chips out of the hole as the screw advances, which reduces the driving torque needed in dense wood and lowers the chance of the material cracking or splitting ahead of the threads. Coarse thread spacing provides the pull-out resistance that cabinet box construction demands when panels are under load.
Production cabinet shops running box after box benefit most from the 3,500-piece pack, which keeps the bin full through a long run without constant restocking. Custom cabinet makers working with solid wood components alongside plywood carcasses reach for this length when 2-inch screws come up just short and 2-1/2-inch screws would punch through. Installers assembling pre-built cabinet sections on site find the flush-seating flat head and #2 Phillips drive practical when working quickly inside finished boxes. The zinc finish is appropriate for interior cabinetry in kitchens, baths, and built-in furniture where corrosion exposure is limited to normal indoor humidity.
The extra quarter inch adds thread engagement when fastening through a 3/4-inch face into a 3/4-inch panel, or when assembling stacked or doubled material. If 2-inch screws are leaving the threads short of fully biting into the second piece, 2-1/4 inches closes that gap.
In most wood-based cabinet materials, yes. The nibs mill the countersink as the screw seats, so a separate countersink step is not required. On very hard materials or thin veneered surfaces, a light countersink beforehand will give the cleanest result.
A standard Type 17 point has a short flute at the tip that cuts into wood fiber. The Type 17 Auger extends that flute further up the tip, which improves chip ejection and reduces driving torque in thicker or denser material. It is especially useful when the screw has to travel through a full inch or more before the threads bite.
The coarse thread, flat head, and Type 17 Auger point work well for fastening solid wood face frames to plywood cabinet sides where the grain is oriented so the thread can bite across it. For face-frame joinery in hardwood species like maple or oak, a fine-thread face-frame screw is the better choice because fine threads grip hardwood more securely and reduce splitting risk.
The zinc plating is suited for dry indoor environments. It is not rated for exterior exposure, pressure-treated lumber, or high-humidity conditions. For outdoor work, choose a screw with a corrosion-resistant coating rated for the exposure level.
A 3,500-piece box of a well-specified screw is one less variable to manage during a run. The Würth #8 x 2-1/4" assembly screw pairs a practical length with point, thread, and head geometry that works cleanly in the materials cabinet shops use every day.
Sold In: 3500 Each
