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The Würth #8 x 1-5/8 inch flat head assembly screw is a coarse-thread, square-drive fastener built for joining cabinet panels, wood components, and similar assemblies where the screw needs to drive flush and hold firmly in the material. The 1-5/8 inch length gives the screw solid thread engagement past a standard 3/4-inch face into the receiving material behind it, making it a natural fit for cabinet carcass assembly, drawer box construction, and interior panel joinery.
At 1-5/8 inches, this screw is long enough to pass through a standard 3/4-inch panel and achieve meaningful thread engagement in the part behind it, but short enough to stay clear of the opposite face on typical cabinet stock. That balance makes it particularly useful for face-to-panel connections, drawer box assembly, nailer and cleat attachment, and anywhere a #8 gauge coarse-thread screw needs to pull two pieces of cabinet-grade material tight without breaking through.
The Type 17 Auger Point starts cleanly without a pilot hole in most softwoods and engineered sheet goods, and the fluted tip keeps splitting in check when driving near edges or into denser hardwood components. For production cabinet shops moving through high volumes of box assembly, the point and thread combination reduces the driving effort per screw, which adds up across a full run.
The black finish keeps screw heads inconspicuous in dark or painted cabinet interiors where a zinc or bright-metal head would stand out. The flat head with underhead nibs mills its own countersink seat in hardwood, softwood, plywood, MDF, and particleboard as the screw is driven, so the head sits flush without requiring a separate countersinking operation on most cabinet materials. The coarse thread runs the full engagement length appropriate for the substrate types this screw targets.
Production cabinet shops will use this as a go-to box assembly screw, especially where consistent flush seating and a dark, low-visibility head are priorities. Custom woodworkers building drawer boxes, cabinet carcasses, or nailer blocks in 3/4-inch stock will find the 1-5/8 inch length well matched to those joints. Finish carpenters and installers attaching cleats, blocking, or trim components to cabinet panels will also find the length and gauge combination workable across a wide range of interior assemblies. The 1,000-piece box quantity suits any shop or crew that goes through fasteners at production volume.
The nibs on the underside of the head mill the material around the countersink as the screw seats, helping the head sit flush without a separate countersink drill step. In hardwood, MDF, and particleboard this typically produces a cleaner, flatter seat than a plain flat head would on its own.
For most face-to-panel or panel-to-panel joints in 3/4-inch cabinet stock, 1-5/8 inches gives the screw solid thread engagement into the receiving piece while staying clear of the far face. For joints involving thicker material or structural blocking, a longer screw in the same family may be more appropriate.
In most softwoods and engineered sheet goods the Type 17 Auger Point self-starts without a pilot hole. In dense hardwoods or when driving very close to an edge, a pilot hole reduces splitting risk and improves consistency, especially on production runs.
This screw uses a #2 square drive bit. A correctly sized #2 square bit is designed to hold the screw on the bit for one-handed placement. Performance depends on using a bit that is true to size.
Yes. The black finish is intended for dry indoor applications such as cabinet and furniture assembly. It keeps fastener heads visually recessive in dark cabinet interiors and painted or stained assemblies. This screw is not intended for exterior or high-moisture environments.
When the job is cabinet panel assembly, drawer box construction, or interior joinery in 3/4-inch stock and the head needs to disappear into the material, the Würth #8 x 1-5/8 inch flat head assembly screw delivers the length, thread, point, and finish combination to get it done cleanly at production volume.
Sold In: 1000 Each
