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The Würth #8 x 3" Washer Head Assembly Screw is a high-production fastener built for cabinet assembly, casework, and wood joining wherever longer reach is the deciding factor. At 3 inches, it crosses material thicknesses that shorter screws in this family cannot bridge, making it the go-to choice when stock is thick, joints are stacked, or hardware backing demands deeper thread engagement.
Most assembly screws in this family handle standard panel-to-panel and rail-to-stile work in 3/4-inch stock. The 3-inch length steps in when the job is thicker: laminated cabinet sides, double-layer substrates, thick drawer-box fronts attached to a box frame, or hardware backing blocks that need the screw to run through multiple plies before reaching solid material. It also suits situations where a cabinet box is being secured through a finished panel into a sub-frame, or where tall stile stock requires the full thread to be buried before the head seats. Specify this length when thread engagement depth is a structural requirement, not just a preference.
The washer head profile spreads clamping force over a broad surface, which helps prevent pull-through in lower-density substrates and keeps the screw from sinking too deep in softer materials. The underhead nibs cut a clean countersink as the head seats, so the result is flush and consistent without a separate prep step. The Turbo Thread geometry uses an aggressive wider pitch that reduces the number of rotations needed to reach full depth, which matters in a production environment where driving time adds up across thousands of fasteners. The lubricated coating is dry to the touch and keeps the thread surface slick from start to seat, extending driver bit life alongside reducing torque demand. The combination drive accepts a #2 Phillips or a #2 Square bit in the same recess, so switchovers between operators or tool stations do not require a screw change.
Packed 1500 to the box, this screw is sized for shops and crews that move through volume. Cabinet production lines, millwork operations, and commercial casework installers all benefit from having a deep-reach screw in bulk when the project calls for it. The combination drive and lubricated finish are particularly well suited to automated or semi-automated screwdriving setups where bit engagement consistency and low torque demand keep the line moving. For residential installers fitting thicker built-in assemblies or cabinet stacks, the 3-inch length removes the guesswork about whether a shorter screw has enough purchase in the receiving material.
The 3-inch length is the right call when you are driving through multiple plies, thick laminated sides, or into a sub-frame behind a finished panel. It ensures the full thread engages the receiving material rather than running out before it reaches solid wood.
The lubricant coating reduces friction between the thread and the material as the screw is driven. That lowers the torque your driver needs to apply, which translates to less heat at the tip, less wear on the drive bit, and a lower chance of stripping the recess during high-volume runs.
Yes. The Turbo Thread and sharp point are well suited to engineered panels including particleboard and MDF, as well as solid wood. The washer head's broad bearing surface also helps prevent pull-through in lower-density panel materials.
No. The combination recess accepts either a standard #2 Phillips bit or a standard #2 Square bit. You use whichever is already in your driver. For best bit retention on the square side, use a correctly sized #2 Square bit.
This screw is intended for interior woodworking, cabinet, and casework applications. It is not rated for exterior or high-moisture environments.
When the joint is thick, the substrate is layered, or the job simply needs more thread in the wood, the Würth #8 x 3" Washer Head Assembly Screw delivers the reach, the drive flexibility, and the production-ready pack size to keep the work moving without compromise.
Sold In: 1500 Each
