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The Würth #8 x 1-1/2" flat head assembly screw is built for the joint depth that comes up most often in cabinet and furniture work: two faces of 3/4-inch material meeting edge to face. The Type 17 Auger point, coarse thread, milling nibs, and Phillips drive work together to start fast, seat flush, and hold in softwood, plywood, MDF, and similar sheet goods without a separate countersink step.
A 1-1/2" length is the practical match for joining two pieces of 3/4-inch sheet stock face-to-edge, attaching cabinet backs to face frames, securing shelf cleats inside a case, and fastening hardware backing to the interior of a panel. The screw reaches through the first layer and into the second without over-penetrating thin panels or breaking through the opposite face. It also suits attaching 3/4-inch solid-wood components to plywood substrates, a joint that comes up constantly in drawer box construction, face frame attachment, and interior millwork details. Shops building in volume will find the 7,000-piece box keeps the bin full through long production runs on standard cabinet lines.
The flat head profile is the right choice whenever the screw head needs to sit at or below the surface rather than proud of it. The milling nibs on the underside of the head do the countersink work during installation: as the screw is driven home, the nibs cut into the wood fiber around the shank, creating a clean recess that accepts the full head diameter. In softwood, plywood, and MDF, this eliminates the countersink-drill step without leaving a raised ring or a ragged edge. The result is a smooth, finished surface that takes paint or veneer tape cleanly. The zinc-plated carbon steel construction gives the screw adequate corrosion protection for dry interior environments. These screws are not rated for outdoor exposure or contact with ACQ-treated lumber.
This screw is at home in shops running high-volume cabinet production where softwood, plywood, and sheet-good panels are the daily material. The #2 Phillips drive is the most widely available bit in any shop or installer's kit, which keeps changeovers fast and eliminates the need to stock a specialty bit for this fastener. Finish carpenters fitting interiors, millwork crews assembling cases on site, and cabinet installers attaching components to a box will all find the 1-1/2" length gives them clean, flush fastening without the over-penetration risk that comes with a longer screw in 3/4-inch material. The coarse thread holds well in the low-density substrates common to production cabinetry, including particleboard core, MDF, and furniture-grade plywood.
In softwood, plywood, MDF, and particleboard, the milling nibs on the underside of the head cut their own countersink as the screw is driven. In very dense hardwood, a light countersink pass beforehand produces a cleaner result.
The longitudinal flute on the Type 17 Auger point cuts and removes wood fibers ahead of the thread, reducing the torque needed to drive the screw and lowering the risk of splitting near edges or in denser panels.
Yes. The 1-1/2" length is sized for face-to-edge joints in 3/4-inch material, which is one of the most common joints in cabinet carcass and case assembly.
The flat head with nibs seats flush, leaving a surface that accepts paint, veneer tape, or edge banding cleanly. It is a good fit for interior cabinet components where a finished look at the fastening point matters.
No. The zinc-plated finish is rated for dry indoor environments. For outdoor work or contact with pressure-treated lumber, choose a screw with a corrosion-resistant coating rated for those conditions.
When the joint is 3/4-inch material and the finish needs to be flush, the Würth #8 x 1-1/2" flat head assembly screw covers the most common case in cabinet and millwork production — fast starts, clean seating, and a flush head, without a separate countersink step.
Sold In: 7000 Each
