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The Würth #8 x 2-1/4 inch flat head assembly screw is a coarse-thread wood screw with a Type 17 auger point, combination Phillips/square drive, underhead nibs, and a zinc finish. The extra length makes it a natural fit when fastening through thicker panels, stacked material, or anywhere you need more thread engagement than a shorter screw can provide.
Most cabinet assembly screws top out at 1-1/2 or 2 inches. The 2-1/4 inch length on this screw extends thread engagement further into the receiving member, which matters when you are fastening through a thicker face, joining stacked panels, or connecting components where the combined material thickness eats up what a shorter screw can reach. It is also a practical length for attaching a cabinet box to a wall cleat or backing, where you want the screw to reach solid material behind a finished panel. The flat head with nibs seats flush as the screw bottoms out, so the extra depth does not show on the face.
The combination recess accepts a #2 Phillips or a #2 square bit, so a driver change is not required when switching between what is in the gun and what is on the bench. The square side of the recess is designed to hold the screw on a correctly sized bit for one-handed placement, which speeds up repetitive fastening in a production run. The Type 17 auger point cuts a small flute into the wood as the screw advances, pulling fibers away rather than compressing them. This lowers driving resistance in dense wood and reduces the risk of cracking near an edge. Zinc plating on the shank and head is suited to dry indoor environments. This is an interior fastener, not a candidate for treated lumber or damp locations.
Cabinet shops assembling heavier carcasses, frameless boxes with thicker sidewalls, or built-ins that need to pull through a finished panel into solid backing will find the 2-1/4 inch length useful where a standard 1-1/2 or 2 inch screw falls short. Millwork and furniture shops working with double-thick stock or laminated panels also benefit from the added reach. The box of 3500 is sized for production environments where this length stays in steady rotation rather than occasional use.
The extra quarter inch adds thread engagement in the receiving member. That is most useful when fastening through a thicker face panel, connecting stacked material, or anchoring to a cleat or nailer behind a finished surface where a 2 inch screw does not reach solid material.
Yes. The combination recess accepts a #2 Phillips bit. It also accepts a #2 square bit in the same opening, so you can use either without switching the screw.
The Type 17 auger point has a small flute near the tip that cuts and clears wood fibers as the screw starts. A standard sharp point compresses fibers, which increases torque and the risk of splitting. The auger flute reduces both, especially in denser wood.
No. The zinc finish is suited to dry indoor environments. For treated lumber or exterior work, a coating rated for ACQ compatibility is required.
The nibs mill a small countersink into the wood surface as the head seats, allowing the flat head to sit flush without a separate countersink operation. They also help the head stay centered and resist spinning if the bit slips.
When the stock is thick, the joint is deep, or the screw needs to reach past a finished face into solid backing, the 2-1/4 inch length keeps the connection solid without asking for a separate fastener or an extra pre-drilling step.
Sold In: 3500 Each
