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The Würth #8 x 1-1/2 inch flat head assembly screw is a square drive, coarse-thread fastener built for cabinet carcass construction, panel-to-panel joinery, and wood assembly work where a flush, clean-seating head is required. The 1-1/2 inch length is a practical fit for joining 3/4-inch sheet goods, making it a go-to size on the cabinet shop bench.
At 1-1/2 inches, this screw is dialed in for the joinery tasks that come up constantly in cabinet production. Joining two pieces of 3/4-inch material — a shelf dado, a bottom panel to a side, a back-panel cleat — this length provides solid thread engagement in the receiving piece without breakthrough risk on typical 3/4-inch stock. It also handles hardware backing blocks and interior mounting strips where the combined material thickness calls for something in this range. The coarse thread works quickly in plywood, MDF, and particleboard, the panel materials that make up most of the carcass work in a production shop.
The flat head with nibs is the detail that separates this screw from a generic flat head in a cabinet context. As the screw seats, the nibs under the head mill the countersink directly in the material, so the head sits flush without running a separate countersink bit first. That is a real time saver on interior panels where flush seating affects how shelves sit, how drawers clear, and how finished interiors look. The Type 17 auger point contributes from the other end: the fluted tip cuts into the panel cleanly at startup, lowering the torque required to drive the screw and reducing the splitting pressure that a plain sharp point puts on material near an edge. Together, these two features make this screw faster to drive and cleaner to finish than a comparably sized generic wood screw.
This screw is a natural fit for production cabinet shops, millwork operations, and custom woodworking studios where carcass assembly moves fast and fastener reliability is a given, not a question. The black finish keeps heads unobtrusive in dark-painted or melamine interiors. The square drive holds the bit securely — provided the bit is correctly sized — which matters when you are driving hundreds of screws in a day and do not want to chase a dropped fastener every third hole. At 1,000 per box, the pack quantity suits a shop that treats this as a daily-use screw rather than a specialty item. It also works well for installers assembling or site-fitting cabinets, where the 1-1/2 inch length handles most carcass connections without swapping to a different size mid-task.
The Type 17 auger point is designed to start and drive without a pilot hole in most wood-based panels, including plywood, MDF, and particleboard. In hardwood or very close to an edge, a pilot hole reduces splitting risk.
Yes, in most wood-based materials. The nibs under the flat head mill their own countersink as the screw seats, so the head finishes flush without a separate countersink step. On very hard materials or thin laminates, test on scrap first.
The square drive on this screw requires a #2 square (Robertson) bit. Using a correctly sized bit is important for the bit-retention behavior the square recess is designed to provide.
This is a coarse-thread screw. Coarse thread is well matched to softwood, plywood, MDF, and particleboard. For hardwood face frames — maple, oak, cherry — a fine-thread face frame screw is the better choice, as fine threads provide better holding power and reduce splitting in tight-grained hardwood.
This screw has a black finish rated for indoor woodworking and cabinet assembly. It is not intended for exterior or high-moisture environments.
When 3/4-inch panel joinery is the job, this Würth #8 x 1-1/2 inch flat head assembly screw covers it cleanly: a flush-seating head that self-countersinks, a Type 17 point that starts fast and drives easy, and a square drive that keeps the bit where it belongs.
Sold In: 1000 Each
