The Würth #8 x 1-5/8" flat head assembly screw is sized to land in a consistent sweet spot for standard 3/4-inch cabinet panels, face-frame components, and softwood joinery. The 1-5/8" length gives enough thread engagement in the receiving piece without punching through the back face, making it a natural fit for carcass assembly and general panel-to-panel fastening in a production cabinet shop.
At 1-5/8", this screw drives through a 3/4-inch panel and threads into the adjacent piece with enough depth to hold the joint firmly under load. That makes it a reliable choice for box construction on painted cabinets, utility shelving, and shop casework where the assembly will see everyday stress. It also works well for attaching sub-bases, mounting blocking inside a cabinet box, and any other situation where a short-to-medium length screw in standard sheet goods is what the job calls for. Shops running production lines through particleboard or melamine-faced panels find the coarse thread and Type 17 point a reliable combination for consistent drive quality without manual pre-drilling.
The flat head countersinks flush with the panel surface, keeping the interior of a finished cabinet box clean and free of protruding hardware. The nibs on the underside of the head do the countersink work as the screw is driven, milling a clean pocket in softwood, plywood, and MDF rather than tearing the laminate or face veneer. Zinc plating provides standard corrosion protection for climate-controlled indoor environments. This is an interior screw — not suited for exterior exposure, treated lumber, or high-humidity applications where a more protective coating would be required.
Production cabinet shops ordering in bulk find the 4000-count box keeps the bin stocked through a full run of base and wall units without a mid-job reorder. Frameless and face-frame builders alike keep this size on hand because 3/4-inch sheet goods are the default panel thickness across most cabinet lines. Contractors assembling pre-built boxes on site and woodworkers building shop furniture or utility storage will find the 1-5/8" length covers most of the everyday joins that come up in interior work.
A 1-5/8" screw driven through 3/4-inch stock leaves roughly 7/8" of thread in the receiving piece — enough for solid grip in plywood, particleboard, and MDF without punching through a 3/4-inch back panel or side. It is a practical length for standard cabinet carcass work.
The milling nibs on the underside of the flat head act as small cutters that relieve wood fibers and laminate as the head seats. The result is a cleaner, more consistent countersink without running a separate countersink bit — useful in production where saving a step matters.
Coarse thread pulls well in softwood, plywood, particleboard, MDF, and melamine-faced panels. The wider thread spacing captures more fiber volume in low-to-medium density materials, giving good withdrawal resistance in the substrates most cabinet boxes are built from.
Yes. The #2 square drive accepts any standard #2 Robertson bit. The square recess is designed to hold the screw on a correctly sized bit for placement, which is helpful when reaching into a cabinet box during assembly.
No. The zinc finish is rated for dry indoor use. For outdoor work or pressure-treated lumber, choose a screw with a corrosion-resistant coating rated for the exposure level.
When the job is standard 3/4-inch cabinet stock and the priority is clean seating, consistent drive, and enough grip to hold a production box together for the long run, this 1-5/8" screw in a 4000-count box covers the work without complication.
Sold In: 1000 Each
