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This Würth #8 x 1-inch flat head assembly screw is built for wood joinery where the combined material thickness is an inch or less. The coarse thread bites quickly into softwood, plywood, and engineered panels, and a lubricated finish keeps driving torque low across a full production run. Packed 1000 to the box, it is a shop-floor staple for cabinet assembly, drawer box construction, and panel joinery.
A 1-inch screw has a narrow margin: enough thread to grip firmly in the receiving piece, not so much length that it breaks through the back face of a thin panel or bottom of a drawer box. That makes this size the right call for joining 1/2-inch drawer box sides to a front or back panel, for fastening a cabinet back into a rabbet, or for attaching thin plywood gussets and cleats inside a carcass. It also works well when screwing through a face frame member into a panel edge where penetration depth must stay controlled. In any joint where the material stack is an inch or close to it, this length keeps the screw fully engaged without running out of wood.
The lubricated coating on the shank and threads reduces driving resistance without adding a wet or oily feel that would interfere with finishing or glue joints. In production environments where hundreds of screws go in per shift, lower per-screw torque adds up to less driver heat, less bit wear, and less operator fatigue. The coarse thread complements that by biting into the fiber structure of softwood and engineered panels with fewer revolutions to full engagement. Together, the two features make this screw fast to drive and easy on tooling in any shop running volume assembly.
Cabinet shops assembling face-frame boxes, drawer boxes, and plywood carcasses in softwood or sheet goods will find the 1-inch length and coarse thread covers a wide range of their thin-stock joinery needs. Finish carpenters attaching light interior components, millwork installers fastening thin panel backs, and production woodworkers building RTA-style furniture all land on this size regularly. The combination drive is a practical choice when multiple people on a crew or line may be running different drivers, since the same screw accepts either a #2 Phillips or a #2 square bit without stocking two SKUs.
A general guideline for flat head screws is that roughly two-thirds of the screw length should engage the receiving piece. For a 1-inch screw driven through 3/8-inch material, that leaves about 5/8 inch of thread in the second piece. If your receiving piece is thinner than that, consider a shorter screw; if it is significantly thicker, a longer length will give better pull-out resistance.
Yes. The recess is machined to accept a #2 Phillips or a #2 square bit. A correctly sized square bit will hold the screw on the tip for easier one-handed placement. A worn or off-size bit of either type will reduce that fit, so a fresh bit gets the best result from either drive style.
The sharp point self-starts in most softwood, plywood, and MDF without a pilot hole. For installations close to an edge or end grain in denser material, a pilot hole reduces the risk of splitting or surface chipout near the screw head.
This is an interior assembly screw. For outdoor work or pressure-treated lumber, use a screw rated for exterior and ACQ-compatible environments.
The lubricant reduces friction between the thread surface and the wood fiber as the screw is driven. The result is lower driving torque, less heat at the bit tip, and less wear on the driver over a long production run. It does not provide meaningful corrosion protection and is not a substitute for a corrosion-resistant coating.
When thin-stock joints make up the bulk of a production run, having the right length on hand from the start avoids over-penetration problems and re-work. This 1-inch coarse-thread assembly screw with a lubricated finish and combination drive covers the most common shallow joints in cabinet and drawer box assembly, one clean-driving screw at a time.
Sold In: 1000 Each
