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This Würth #8 x 1-1/4 inch flat head assembly screw is built for cabinet carcass construction, panel joinery, and woodworking assembly where the workpiece is 3/4-inch material. The coarse thread grabs softwood, plywood, MDF, and particleboard without spinning out, while the lubricated finish reduces driving friction through repeated production runs.
At 1-1/4 inches, this screw is well matched to standard 3/4-inch sheet goods. It passes cleanly through one panel layer and threads into the substrate with enough engagement to hold the joint without over-penetrating thin backs or shelf bottoms. Cabinet shops reach for this length when building box carcasses from melamine, Baltic birch, or MDF, and when assembling drawer boxes from plywood. It also works for attaching hardware backing blocks, mounting cleats inside cabinet interiors, and securing lightweight face components where a longer screw would run through the far face.
The lubricated finish on this screw is a functional coating, not a decorative one. It lowers the torque needed to seat the screw, which matters when a shop is cycling through hundreds of joints in a single run. Less driving friction means fewer stripped heads, less motor load on cordless tools, and more consistent seating depth across a batch. The coarse thread pairs well with that: in the fibrous matrix of MDF, particleboard, and softwood plywood, a coarse thread cuts aggressively and holds without backing out under load. For dense hardwood panel joinery, a pilot hole keeps the point from deflecting and lets the thread engage cleanly.
A box of 1000 screws suits cabinet shops that cycle through fasteners quickly. This screw fits into the kind of work where consistency matters more than novelty: drawer box assembly, cabinet bottom attachment, interior shelf cleat fastening, and panel-to-panel joints in painted or melamine-finished carcasses. The flat head countersinks flush in pre-bored holes, leaving a surface that takes edge banding, filler, or fastener caps cleanly. For installers working on site, the 1-1/4 inch length is handy for attaching mounting rails, securing cabinet backs to frames, and other short-reach fastening tasks where a longer screw would create problems.
It gives you roughly 1/2 inch of thread engagement past the first panel face, which is enough to draw the joint tight and hold in most sheet goods without punching through a thin substrate on the far side.
The lubricant is applied to the thread and shank surfaces, not the head face. A countersunk and filled head should accept finish normally, but test on scrap if your finishing process is sensitive to any residue near the fastener.
In softwood and most sheet goods the sharp point self-starts without a pilot. In dense hardwood or near edges, a pilot hole keeps the point on track and reduces the chance of splitting.
It uses a #2 square drive bit, which is standard in most production shop bit sets.
The lubricated finish is for indoor woodworking and cabinet assembly. For outdoor or pressure-treated lumber work, use a screw rated for those conditions.
When the job calls for a #8 flat head screw that countersinks cleanly, drives without fighting the bit, and holds reliably in 3/4-inch panel stock, this 1-1/4 inch Würth assembly screw is the straightforward choice for shops and installers who need that performance across a full box run.
Sold In: 1000 Each
