Würth #8 x 3" Flat Head Drywall Screw Square Drive - Sharp Point Twinfast Thread Black, 5966200012990 100 - 100/Box

A Flat Head Drywall Screw Built for Fewer Turns and a Flush Finish

The Würth #8 x 3" flat head drywall screw pairs a twinfast double-lead thread with a #2 square drive and sharp point, designed for interior panel and gypsum board work where a countersunk, flush-seated head is the goal. Packed 100 to the box.

Key Features

• Twinfast double-lead thread advances the screw roughly twice as far per revolution as a single-lead thread, reducing the number of driver rotations to fully seat the fastener.
• Flat head profile seats flush in a countersunk hole, leaving a clean, paintable surface without a protruding head.
• #2 square drive provides positive bit engagement and reduces cam-out compared to a Phillips recess during repetitive driving.
• Sharp point self-starts in gypsum board and interior wood-based panels without a pilot hole.
• Black finish gives the screw a low-visibility appearance once seated, suitable for dark substrates and interior applications.

Where This Screw Works

This is an interior-use drywall screw suited to gypsum board, MDF, particleboard, and wood panel applications where a flush countersunk head is needed. The flat head seats cleanly in a pre-drilled countersink rather than self-dimpling like a bugle head, making it a practical choice when the fastener surface will be visible, filled, or painted. At 3 inches, it has enough length for thick assemblies or for driving through a panel and well into a backing member. Keep this one for dry, indoor work — the black finish is not rated for exterior or high-moisture environments.

Twinfast Thread and Square Drive in Practice

The twinfast thread uses two helical leads starting at offset positions on the shank. Because the screw advances twice as far with each full turn of the driver, it reaches full depth in roughly half the rotations of a comparable single-lead screw. That matters in production settings — cabinet shops, millwork operations, and interior finish crews — where driving the same screw hundreds of times per day adds up. The #2 square drive supports that pace: the square recess is designed to hold a correctly sized bit securely, which reduces the driver slippage that slows single-screw placement and can mar surrounding surfaces.

A Good Fit for Interior Production Work

This screw suits cabinet shops and finish contractors who need a reliable interior panel fastener with a flush-seated head and efficient driving geometry. The combination of twinfast thread, square drive, and flat head is practical for production assembly of MDF components, panel installations, and interior gypsum board work where countersinking is part of the workflow. The 100-piece box is sized for targeted use or for evaluating the screw in a specific application before committing to a larger quantity.

Common Questions

The Right Interior Panel Screw for the Job

When you need a flush-seating, fast-driving interior screw for gypsum board, MDF, or panel work, this Würth flat head drywall screw delivers the twinfast thread speed and square drive control to keep production moving.