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This Würth #8 x 2-1/2 inch flat head assembly screw is built for wood-to-wood fastening where joints require more thread engagement — cabinet carcass assembly into thicker panels, attaching drawer box components to solid-wood sides, or securing face-frame stock to a cabinet box through 3/4-inch material and into the panel behind it. The turbo thread, sharp point, lubricated finish, and combination Phillips/square drive work together to keep the screw moving cleanly from start to seat.
At 2-1/2 inches, this screw reaches deeper than the typical cabinet hardware-mounting length. It handles joints where the fastener needs to pass through one panel and drive well into a second: a face frame fastened through 3/4-inch stock into a 3/4-inch cabinet side, a back panel secured through a cleat into a thicker frame member, or a structural interior shelf dado that needs reinforcement beyond what a shorter screw provides. The length also suits rough assembly tasks in solid-wood furniture where a longer bite improves withdrawal resistance. This is not the screw for thin panel backs or hardware mounting — those jobs call for a shorter length in the same family.
The turbo thread is designed with an aggressive wider pitch that reduces the number of revolutions needed to seat the screw, lowering the torque demand across a full production shift. The lubricated finish works alongside that thread geometry: the dry-to-touch lubricant on the thread and point surfaces reduces friction from the moment the screw contacts the material, which matters most in denser softwoods, hardwood-veneer plywood, and MDF where friction buildup can stall a driver mid-drive. The sharp point self-starts cleanly in these materials. The flat head nibs cut a clean countersink as the head approaches the surface, so the head sits flush without tearing out the surrounding material — useful in exposed cabinet interiors and face-frame applications where the surface is visible after assembly.
Cabinet shops running production assembly find the combination of turbo thread and lubricated finish reduces driver fatigue and bit wear over a full day of fastening. The 1000-count box supports that kind of volume without frequent restocking. Contractors assembling pre-built cabinet sections on site benefit from the combo drive: a Phillips bit is often what's loaded, and this screw accepts it without a bit swap, while a square bit is there when a tighter-torque scenario calls for it. Furniture makers joining thicker solid-wood components — aprons to legs, tops to frames — get the deeper thread engagement that the 2-1/2 inch length provides, with a flush-seating head that disappears after assembly.
Yes. The combination recess accepts a #2 Phillips driver. It also accepts a #2 square bit in the same recess, so you can use whichever is loaded without switching.
The lubricant is a dry-to-touch coating applied to the thread and point surfaces. It is not a wet oil. In typical glued-and-screwed cabinet assembly it does not interfere with the glue bond at the joint faces, where the lubricant is not present.
The turbo thread uses a wider-pitch, modified profile that requires fewer rotations to fully seat the screw and generates less resistance as it drives. In production use, that translates to less torque demand per screw across a high-volume run.
This is an indoor assembly screw with a lubricated finish, not a corrosion-resistant exterior coating. It is intended for interior cabinet, furniture, and woodworking assembly. For outdoor or pressure-treated applications, choose a screw rated for that environment.
In most softwood, plywood, MDF, and many hardwood applications the nibs mill a clean countersink as the head seats, so a separate countersink step is not required. In very dense hardwoods a pilot countersink can help ensure a cleaner result.
When the joint calls for thread engagement beyond what a shorter screw provides, this #8 x 2-1/2 inch assembly screw delivers it — with turbo thread efficiency, a lubricated finish, and a combo drive that works with the bits already on hand.
Sold In: 1000 Each
