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The Würth #8 x 3-inch flat head assembly screw is built for wood-to-wood connections where depth matters. With a coarse thread, Type 17 Auger point, #2 square drive, and milling nibs under the flat head, it drives cleanly through thick panels, solid stock, and multi-layer assemblies and seats flush every time.
At 3 inches, this screw is sized for connections that demand deep thread engagement. That includes fastening thick cabinet carcases, laminated panel assemblies, heavy drawer box components, and solid-wood structural members where a shorter screw would leave the joint undersecured. It is also the right reach for attaching face frames to deep cabinet boxes, securing blocking inside cabinet interiors, or driving through one thick member into a second. When the stock is substantial and the joint needs to hold under real load, 3 inches puts enough thread into the second piece to do the job.
The Type 17 Auger Point on this screw features an extended flute that pulls chips out of the hole as the screw advances. In dense hardwood or thick engineered panels, that chip clearance keeps driving torque manageable and reduces the pressure that causes splitting near edges. The milling nibs beneath the flat head work alongside the point: as the screw reaches full depth, the nibs cut a clean countersink in the surrounding material so the head sits flush rather than proud. The coarse thread locks the connection with strong pull-out resistance in fibrous wood substrates. The #2 square drive gives the bit a stable, non-slipping seat under the torque needed to drive a 3-inch screw to full depth.
This screw is a practical choice for cabinet shops, millwork operations, and production woodworking teams that regularly work with thick stock. The 1000-piece box keeps the bench stocked through a full production run without mid-job restocking. The black finish suits dark-interior cabinet assemblies and painted carcases where a silver or bright head would stand out. For installers and site carpenters working on cabinet installations or heavy interior millwork, the combination of length, point, and drive type means fewer pilot-hole stops and consistent results from the first screw to the last.
Yes. At 3 inches, the screw passes through a 3/4-inch panel and extends 2-1/4 inches into the second piece, providing substantial thread engagement in the receiving material.
The Type 17 Auger Point is designed to start and advance in wood without a pilot hole in most applications. For very dense hardwoods or fastening close to an edge, a pilot hole reduces the risk of splitting.
A #2 square drive bit fits this screw. The square recess is designed to hold the screw on a correctly sized bit for controlled placement.
In most wood and engineered panel applications, yes. The milling nibs under the head cut a countersink as the screw is driven to full depth. Very hard materials may benefit from a pre-drilled countersink for a cleaner result.
This screw carries a black finish suited for dry indoor applications. It is not rated for exterior exposure or direct contact with pressure-treated lumber.
When the job calls for a long, reliable fastener that seats clean and drives without drama, this Würth #8 x 3-inch flat head assembly screw covers the connection from start to flush.
Sold In: 1000 Each
