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The Würth #8 x 2-1/2" washer head assembly screw is sized for through-panel joints, stacked material connections, and cabinet assembly situations where shorter screws fall short. A turbo thread, lubricated finish, sharp point, and combination Phillips/square drive work together to make this a reliable production screw for shops running volume work in softwood, hardwood, and engineered panels.
A 2-1/2" screw lands in a specific range of cabinet and panel work. It is long enough to pass through a face material and bite deep into framing or structural members behind it, and short enough to stay within manageable stock thicknesses without breakthrough risk on most 1-1/2" to 2" assemblies. Common fits include attaching cabinet backs to internal rails, fastening shelf cleats through side panels, connecting secondary frames inside cabinet boxes, and securing built-up structural layers in casework or millwork. Shops that regularly work with 1-1/2" to 2" combined stock will find this length covers a range of those joints without switching screws.
The turbo thread's wider pitch and aggressive profile are intended for wood-based materials: softwood, hardwood, plywood, MDF, and particleboard all respond to the faster thread engagement with less resistance than a standard coarse thread. The lubricated finish takes another step toward easier driving by reducing surface friction on the thread flanks and under the head, which matters most on longer screws where cumulative friction builds as the thread travels deeper. The washer head provides a broad bearing surface that distributes clamping load without countersinking, which is the right geometry when the goal is holding force against a face rather than a flush finish. The nibs on the underside of the head mill into the surface as the screw seats, helping the head land cleanly and stay put.
This screw is packaged 1000 to the box, which fits the consumption rate of shops running cabinet production or high-volume casework. The combination drive is particularly useful in environments where multiple assemblers may be working with different cordless drivers: the same screw accepts a #2 Phillips or a #2 square bit in the same recess, so there is no need to pre-sort or dedicate a driver to this fastener. For interior cabinet and panel applications where a washer head profile, turbo thread, and a 2-1/2" reach are the right combination, this screw handles the work without adding friction or extra steps to the process.
The combination recess accepts a #2 Phillips or a #2 square bit. Either works in the same head without switching screws.
For a face-to-face joint in two 3/4" panels, the combined thickness is 1-1/2". A 2-1/2" screw will pass fully through and extend an inch into whatever substrate is behind the second panel, which is appropriate when you need that extra depth for pull-out resistance into a frame or rail. If the second panel is the final substrate with nothing behind it, a shorter length is the better choice to avoid breakthrough.
Yes. The turbo thread and sharp point are compatible with MDF, particleboard, and other engineered panel materials. The washer head's broad bearing surface also helps prevent pull-through in lower-density substrates.
The washer head sits on top of the material surface and is not designed to countersink. It bears flat against the surface and clamps down through the nibs. Use a flat or countersunk head screw where a flush finish is required.
Yes. This screw carries a lubricated finish suited to interior cabinet and panel applications. It is not rated for exterior or high-moisture environments.
When the joint calls for extra depth and the shop runs at volume, this Würth washer head assembly screw delivers the length, drive flexibility, and reduced-friction finish to keep assembly moving without interruption.
Sold In: 1000 Each
