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The Würth #8 x 2-1/2" flat head assembly screw is built for cabinet and furniture assembly where the joint runs through substantial material thickness. A coarse thread, lubricated finish, and combination Phillips/square drive make this screw a dependable choice for high-volume production environments, and the 2500-piece box keeps the bin full through long production runs.
At 2-1/2 inches, this screw is sized for joints where a shorter fastener would not achieve adequate bite in the receiving member. That includes cabinet carcass assembly where the screw passes through a 3/4-inch panel and needs an inch and a half or more of thread engagement in the mating piece, as well as face-frame attachment to a cabinet box, solid-wood edge banding on thick substrates, and panel-to-panel joinery in frameless cabinet construction. It also works well for attaching cabinet backs, mounting blocking inside a box, and similar tasks where the combined material stack calls for a longer fastener. For shops running a consistent 3/4-inch material standard, the 2-1/2 inch length covers a wide range of joinery situations with a single screw size on the bench.
The combination drive recess accepts both a #2 Phillips and a #2 square bit, so the screw works with whatever driver is in hand. The square recess is designed to hold a correctly sized bit for more controlled placement in tight cabinet interiors, while the Phillips side keeps the screw compatible with the widest range of tools in a mixed shop or on an installation crew. The lubricated finish lowers friction along the thread and shank, which matters most in dense or thick material where a dry screw would require noticeably more torque to seat fully. The flat head carries underhead nibs that cut into the surface as the head approaches flush, producing a clean countersink without a separate boring step. This is particularly useful in visible interior panels and face-frame stock where a rough countersink would require additional finishing work.
Packed 2500 to the box, this screw is sized for shops that go through fasteners at production rates. Cabinet manufacturers, custom woodworking shops, and millwork operations running continuous assembly will find the box quantity reduces restocking interruptions on busy days. The combination drive and lubricated finish are well suited to production environments where screws are driven repeatedly with impact drivers or screw guns, and where driving consistency matters as much as individual fastener performance. Installers working on multi-cabinet kitchen or bath projects also benefit from having a single deeper screw on hand to handle the varied joinery situations that come up during a full install day.
Yes. The single recess is shaped to accept either a #2 Phillips or a #2 square bit. You do not need a different screw for each driver type.
The lubricant reduces friction between the thread and the wood fibers as the screw is driven. In thicker stock or denser wood, this means less torque required to reach full seating depth, which reduces the chance of head stripping and makes repetitive driving less taxing on the tool and operator.
No. The nibs are designed to mill the countersink as the head seats, so in most wood and engineered panel applications the screw can seat flush without a separate countersink step. Very hard or brittle materials may still benefit from pre-boring.
This screw carries a lubricated finish intended for interior wood assembly. It is not rated for exterior exposure or contact with pressure-treated lumber. Use a corrosion-resistant screw for those applications.
Through a standard 3/4-inch panel, a 2-1/2 inch screw leaves approximately 1-3/4 inches of thread in the receiving member. That is meaningfully more engagement than a 1-1/2 or 2 inch screw provides, making it the better choice when the joint is under higher load or when the receiving panel is thick.
When the joint is thick and the production pace is high, the Würth #8 x 2-1/2" flat head assembly screw delivers the thread depth, drive versatility, and lubricated finish to keep assembly moving cleanly through a full day of cabinet work.
Sold In: 2500 Each
