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The Würth #8 x 1-3/4" flat head assembly screw is a coarse-thread, square-drive fastener sized to pull together the layer thicknesses most common in cabinet boxes, softwood frames, and engineered panels. A lubricated finish reduces driving resistance, and the flat head seats flush without a separate countersink step when nibs are not present.
At 1-3/4", this screw is long enough to pass through a 3/4" panel and thread substantially into the member behind it, which covers the most frequent joint in cabinet carcass construction: side-to-back, side-to-bottom, and nailer-to-side connections in standard 3/4" sheet goods. It also works well when fastening 1/2" drawer box material to a backing member, or when securing a cleat, nailer, or stretcher inside a cabinet box where the combined thickness demands more shank than a 1-1/4" or 1-1/2" screw delivers. For softwood and MDF frame assembly where a slightly deeper bite improves pull resistance, the 1-3/4" length earns its place over shorter options.
The coarse thread is the right choice for the substrates that make up most cabinet shop work: softwood lumber, plywood, particleboard, MDF, and melamine-faced board. Coarse threads cut into these lower-density fibers quickly and hold well under the lateral and withdrawal loads a finished cabinet sees in service. The lubricated finish on each screw reduces the friction between the thread and the substrate as it seats, which matters most when driving dozens or hundreds of fasteners in a production run. The square recess is sized for a #2 bit and is designed to hold the screw on a correctly sized bit for controlled, one-handed placement at the joint. The flat head requires a countersunk seating surface to sit flush; in most softwood and panel materials, the sharp point and head geometry allow the head to self-countersink as it seats under driver torque.
Cabinet shops running sheet-goods carcass work in volume will make the most of this screw. The 1000-piece box keeps the supply bench stocked through a full production run without constant restocking interruptions. Finish carpenters building softwood site-built boxes, shelving units, and utility casework will find the length, thread, and drive combination covers the majority of their carcass fastening needs. This is an indoor screw suited to dry, climate-controlled environments; the lubricated finish is not a corrosion-resistant coating, so it stays on the interior side of the build.
Yes. The coarse thread is designed for low-to-medium density engineered panels including particleboard, MDF, and melamine-faced board, where the wider thread pitch bites into the fiber matrix and resists pull-out effectively.
In softwood and most engineered panel materials, the sharp point self-starts without a pilot hole. In hardwood or when driving close to an edge, a pilot hole reduces splitting risk.
No. The lubrication is applied to reduce driving friction and lower installation torque. It does not provide meaningful corrosion protection, so this screw is suited to dry interior applications only.
The flat head seats flush when it is driven into a countersunk recess. In softwood and panel materials, the head typically self-countersinks under driver torque. In harder materials or melamine surfaces, a pre-drilled countersink produces a cleaner result.
The square recess geometry resists cam-out more effectively than Phillips under repeated high-torque driving. With a correctly sized #2 square bit, the screw seats on the bit for controlled placement, which speeds up assembly when you are driving a high volume of fasteners.
Pack a box of 1000 on the bench and work through carcass day without slowing down: the 1-3/4" length, coarse thread, lubricated finish, and square drive are matched to the joints, materials, and pace of cabinet shop production.
Sold In: 1000 Each
