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This Würth #8 x 3-inch flat head assembly screw covers applications where shorter screws fall short. With a Phillips drive, coarse thread, sharp point, and black finish, it is a reliable choice for cabinet carcass assembly, furniture construction, face frame attachment to cabinet boxes, and any wood-to-wood joint that calls for a longer reach through thicker combined stock.
A 3-inch screw is the right reach when you are working through two layers of material and need thread engagement well into the receiving member. Attaching a face frame to a cabinet box through 3/4-inch face-frame stock and a 3/4-inch cabinet side leaves the screw threading a full inch and a half into the box wall. Assembling furniture carcasses from sheet goods, anchoring cabinet backs through nailers, or securing heavy shelving cleats to wall framing are all applications where this length earns its place. Shorter screws leave too little bite in the second member; this one gives you margin to work with.
The #2 Phillips drive is the most common bit in most shops, which means this screw works with what is already on hand. The coarse thread is appropriate for solid wood, plywood, and standard wood composites. The sharp point self-starts in these materials, keeping the install moving without a separate pre-drilling step in most cases. The black finish reduces visual contrast against dark cabinet interiors and painted or stained wood surfaces, so the screw head disappears rather than drawing the eye. This is an indoor screw suited to dry, climate-controlled environments.
Cabinet shops running production box assembly often keep a 3-inch length in rotation alongside shorter screws for hardware mounting. Furniture builders working with thick glued-up panels or hardwood frames need the reach this length provides without switching to a lag or structural fastener. Installers securing cabinets to wall studs through a nailer or backing strip, and finish carpenters anchoring heavy trim through multiple layers of material, will find the combination of flat head, coarse thread, and 1,000-count box a practical match for steady-volume work.
When you are driving through two layers of material, such as a face frame plus a cabinet side, or a furring strip plus a wall nailer, a 3-inch screw gives enough thread engagement in the receiving member to hold reliably. Shorter screws may not reach far enough into the second piece to develop full pull-out resistance.
The sharp point self-starts in most wood-based materials without a pilot hole. In dense hardwoods or when driving close to an edge, a pilot hole reduces splitting risk and is worth the extra step.
Yes. The flat head countersinks into wood and panel products so the head sits at or below the surface. For a truly flush finish in harder materials, a countersink bit helps the head seat cleanly.
No. The black finish on this screw is for dry, indoor use. For exterior work or humid environments, choose a screw with a corrosion-resistant coating rated for outdoor exposure.
A box of 1,000 suits production cabinet shops and contractors who run through longer screws steadily. If you are doing a one-off project, check whether a smaller pack size is available in this family.
When the joint calls for more reach, this #8 x 3-inch Phillips flat head assembly screw delivers coarse-thread holding power through thicker combined stock, box after box, without changing tools or bits.
Sold In: 1000 Each
