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The Würth #8 x 1-5/8" flat head assembly screw is a coarse-thread fastener built for cabinet carcass assembly, drawer box construction, and general woodworking joinery where 3/4-inch panel stock is the common material. A Type 17 Auger point, combo Phillips/square drive, flat head with nibs, and zinc finish put everything this screw needs for production shop use in a single box of 1000.
At 1-5/8 inches, this screw is well matched to joints where two layers of 3/4-inch panel stock meet — cabinet side-to-bottom connections, stretcher attachments, and drawer box corner assembly. The length provides solid thread engagement in the second panel without breaking through the opposite face, which matters on painted or laminated interiors where a puncture ruins the finish. It also works in face-frame-to-box attachment through 3/4-inch solid wood into the cabinet side, and in light carcass joinery using 1/2-inch plywood backs with a solid-wood ledger. For shops building frameless cabinets with 3/4-inch melamine or thermally fused panels, the 1-5/8" length is a practical daily-use size that covers a wide range of standard joints without needing a second screw specification.
The screw is steel with a zinc plating, which provides the corrosion resistance appropriate for dry indoor environments: climate-controlled cabinet shops, residential kitchens and baths during installation, and furniture production. This is an interior fastener. For outdoor joinery or applications involving treated lumber, a screw with a more robust corrosion-resistant coating is the right choice. The flat head geometry pairs with the underhead nibs to seat flush in plywood, MDF, particleboard, and solid wood without requiring a countersink bit — the nibs mill the seat as the head comes down. The coarse thread pulls well in the low-to-medium density panel materials that make up most cabinet carcass work.
Production cabinet shops building frameless or face-frame boxes in volume are the core user here. A box of 1000 supports a meaningful run without constant restocking, and the combo drive means the crew can use the square bits on the production line or switch to Phillips if that is what is loaded in a cordless driver at the moment. Custom furniture builders and finish carpenters working on casework, built-ins, and cabinetry also reach for this length when 3/4-inch stock is the common thickness on the job. The Type 17 Auger point and nibs reduce the prep steps — no pilot, no separate countersink — which keeps the work moving.
Yes. The recess accepts a #2 Phillips bit and a #2 square bit in the same opening. The square recess is designed to hold the screw on a correctly sized bit for one-handed placement when using a matched bit.
In most wood-based panel materials — plywood, MDF, particleboard, and melamine — yes. The underhead nibs mill a seat as the flat head comes down, allowing a flush finish without a separate countersink operation. Very hard solid woods may benefit from a pilot hole to help the head seat cleanly.
It is a common match for that joint. The screw passes through one 3/4-inch panel and threads into the second, providing solid engagement without breakthrough on standard 3/4-inch sheet goods.
Yes. The coarse thread is suited for MDF, particleboard, and melamine-faced panels. The Type 17 Auger point reduces driving torque and splitting in these materials.
No. The zinc finish is rated for dry indoor environments. Outdoor work or pressure-treated lumber requires a screw with a corrosion-resistant coating designed for those conditions.
The 1-5/8" length puts this screw squarely in the cabinet box and drawer joinery range, and the 1000-piece box keeps a production shop stocked through a meaningful run without downtime for restocking.
Sold In: 1000 Each
