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The Würth #8 x 2-3/4" Flat Head ASSY Screw delivers reliable fastening where thicker material, stacked panels, or added substrate depth calls for more thread engagement than a shorter screw can provide. Coarse thread, a sharp point, milling nibs, and an RW20 drive make it a capable choice for cabinet and casework assembly where a flush, clean finish matters.
Most assembly screws in the 1 to 2 inch range handle standard 3/4-inch panel joinery cleanly. The 2-3/4 inch ASSY screw is the right choice when the joint is deeper: two panels meeting at a face, a thicker substrate, a cabinet component with a backing layer, or a built-in where the screw needs to pass through one member and bite solidly into the next. The additional length keeps thread engagement high even when the near-side material takes up more of the shank. For drawer boxes assembled from thicker stock, cabinet carcasses with reinforced corners, or casework that joins doubled-up panels, a shorter screw either bottoms out or leaves too little thread in the receiving piece. This length closes that gap.
The flat head is designed to sit flush, and the milling nibs on its underside do the work of cutting a clean countersink as the screw is driven home. That matters most in visible interior surfaces, melamine-faced panels, and hardwood components where a raised or rough head seat shows. The RW20 drive supports this by keeping the bit engaged through the full seating stroke. A drive that cams out just before the head fully seats forces the installer to switch to a hand driver or accept a proud result. The RW20 recess keeps contact through the resistance peak that comes right as the nibs finish milling.
Cabinet shops building frameless carcasses in thicker European-style panels reach for this length when their standard 2-inch screw falls short at corner joints or face attachments. Finish carpenters assembling built-ins with doubled sides or back-to-back mounting panels use it to ensure the fastener lands in solid material. Millwork crews working with particleboard or MDF at higher thicknesses rely on the coarse thread to grip effectively without stripping the softer fiber matrix. It is a specialized length within the ASSY family, not an everyday all-purpose screw, but when the application genuinely needs it, nothing shorter will do the same job as cleanly.
When the near-side material is thicker than standard 3/4-inch stock, a 2-inch screw may not leave enough thread in the receiving piece to hold the joint under load. The 2-3/4 inch length maintains full thread engagement in the second member even when the first member is thicker or when a backing layer is present.
The sharp point works in hardwood, softwood, and engineered panels in this application. A pilot hole is advisable in very dense hardwoods or when fastening close to an edge to reduce the risk of splitting.
The RW20 drive requires a Würth RW20-compatible bit. It is a proprietary Würth drive system and is not interchangeable with standard Torx or star-drive bits, which will not seat correctly in the recess.
The milling nibs on the underside of the flat head are designed to cut their own countersink as the screw seats, including in MDF and particleboard. Pre-countersinking is generally not required, though material density and surface finish can affect the final result.
The zinc finish on this screw is suited to dry interior applications. It is not rated for exterior exposure, pressure-treated lumber contact, or high-moisture environments.
When the assembly calls for deeper reach, the Würth #8 x 2-3/4" ASSY Screw gives you the thread engagement, flat-head seating, and drive stability to finish the joint cleanly the first time.
Sold In: 200 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 10 Each |  WW06147020 Mfr# 061470 20 961 10 | RW20 ASSY Insert Drive Bit |
