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The Würth #8 x 1-3/4 inch flat head assembly screw is a coarse-thread, square drive fastener with a Type 17 Auger point and underhead nibs, sized for joining panels, face frames, and cabinet box components where the fastener needs enough thread engagement to pull joints tight in softwood, pine, plywood, and similar cabinet materials.
At 1-3/4 inches, this screw is well matched to joints where one panel or member is nominal 3/4-inch stock and the fastener needs to reach meaningfully into the piece behind it. That covers a wide range of cabinet and casework operations: attaching a plywood back panel into a solid or melamine-faced side, running a screw through a mounting rail and into a cabinet side, or pinning a shelf cleat in place before adding a shelf pin. The length gives more thread purchase than a 1-1/4 or 1-1/2 inch screw in the same joint without the risk of blowing through a single panel that a 2 inch screw might create in thinner assemblies.
The square drive recess is sized for a #2 bit and is designed to grip the bit snugly so the screw stays on the driver tip during placement — a practical advantage when working inside a cabinet box where a free hand is already occupied. The Type 17 Auger point starts cleanly in softwood and plywood without pre-drilling and clears chips through the fluted tip rather than compressing them, which lowers driving torque and reduces splitting at the point of entry. Once the screw reaches the surface, the nibs on the underside of the flat head mill the countersink as the head seats. In most cabinet materials the head ends up flush or just below the surface without any additional prep work.
The black finish blends into dark cabinet interiors, painted boxes, and frameless construction where exposed screw heads catch the eye. Packed 1,000 to the box, this screw is sized for shops that run through assembly fasteners at volume rather than buying small quantities for occasional use. It fits well in a production environment where speed, consistency, and a clean countersink matter more than decorative detail. Frameless cabinet builders, face-frame shops working in pine and poplar, and millwork crews assembling site-built casework are all natural users of this screw at this length.
Yes. Driving through a 3/4-inch side panel and into a plywood back, or through a back and into a side, is a common use for the 1-3/4 inch length. The coarse thread grips plywood effectively and the Type 17 Auger point starts without pre-drilling in most panel materials.
In softwood and plywood the nibs on the underside of the head will mill a countersink as the screw seats, so a separate countersink step is usually not necessary. In harder substrates a shallow pilot may help the head seat cleanly.
A #2 square drive bit. Using a correctly sized bit allows the screw to seat on the driver tip for placement, which is part of what the square recess is designed to do.
The coarse thread on this screw is designed for softwood, plywood, pine, and similar lower-density materials. For hardwood face frames in maple, oak, or cherry, a fine-thread screw is the correct choice — coarse threads in dense hardwood can strip rather than grip.
The black finish is a coating suited for interior cabinet and woodworking applications. It is not rated for exterior or high-humidity environments.
When the joint calls for a 3/4-inch panel connecting to a second member and you need a clean countersink, solid thread purchase, and a head that stays out of sight, the Würth #8 x 1-3/4 inch assembly screw is ready to do that work 1,000 times over.
Sold In: 1000 Each
