This Würth #8 x 2-1/4" flat head assembly screw is a coarse-thread fastener with a Type 17 Auger point, underhead nibs, and a #2 Phillips drive, finished in black. The 2-1/4" length suits cabinet carcass assembly, panel-to-panel joints, and connections through material combinations where shorter screws would not reach or would leave insufficient thread engagement.
Most cabinet carcass panels run 3/4 inch thick. When you are driving through one panel face and threading into an adjacent panel edge or backing cleat, a 1-1/2" or 2" screw can come up short on thread engagement, especially if the receiving piece is solid wood or a denser engineered panel. At 2-1/4", this screw passes through the near panel and puts a full inch or more of coarse thread into the second member. That depth is also useful when fastening through face stock into a nailer, attaching a built-up base, or securing a stretcher that sits behind a finished panel face. The Type 17 Auger point handles the added depth without excessive torque, clearing chips through the flute as the screw works deeper into the joint.
The black finish keeps fastener heads from standing out in dark cabinet boxes, melamine interiors, and painted assemblies. It is an interior finish suited for climate-controlled shop and installation environments. The flat head seats flush when driven into a pre-drilled countersink, and the underhead nibs allow the head to mill its own recess in many solid woods and composites, reducing prep steps on higher-volume runs. Nibs also help the head resist spinning back if the driver disengages before the screw is fully seated. Together, these details contribute to a cleaner finished interior without adding operations to the assembly sequence.
Cabinet shops building face-frame or frameless carcasses in solid wood and plywood find the 2-1/4" length handles the joints that shorter screws cannot reach cleanly. Millwork teams assembling built-ins, entertainment centers, and library cases with thicker stock or layered panels use this length to get adequate thread depth without switching to a larger gauge. The 3,500-piece box fits shops that run enough volume to justify a dedicated bin for this size rather than pulling from a mixed assortment. If your work regularly calls for driving through 3/4" material into a second member and you want a reliable black-finish screw with a self-clearing point, this box covers that position in the shop.
When the screw passes through a 3/4" panel and threads into a second member, a 2" screw leaves roughly 1-1/4" of thread engagement. The 2-1/4" adds another 1/4" of depth, which matters in denser hardwood panels or built-up assemblies where every bit of thread bite counts. For most softwood and plywood carcass work the difference is modest; for harder or thicker stock it is worth having the extra length available.
In many softwoods, plywood, and softer composites, yes. The nibs mill a clean recess as the head seats and the screw is fully driven. In harder hardwoods like maple or oak, a pre-drilled countersink still produces a cleaner result and reduces the risk of surface splintering around the head.
The coarse thread and Type 17 Auger point suit solid softwood, plywood, and similar wood-based panels. Coarse thread is the correct choice for these substrates. For hardwood face frames in maple, oak, or cherry, a fine-thread screw is the better fit because coarse thread in tight-grained hardwood can strip the material before reaching full seating torque.
This screw is intended for interior woodworking and cabinet assembly in dry, climate-controlled environments. For outdoor or high-humidity applications, a screw with a corrosion-rated coating is the right choice.
A #2 Phillips drive can be used with an impact driver, but Phillips geometry is more prone to cam-out under impact torque than square or star drives. Keeping impact settings moderate and using a sharp, correctly sized bit reduces the chance of stripping the recess, particularly at full depth in denser materials.
When the job calls for a reliable 2-1/4" assembly screw with a self-clearing point, flush-seating flat head, and enough volume to stock the shop for a full production cycle, this Würth box covers the position without compromise.
Sold In: 3500 Each
