Würth #8 x 2-1/2" Flat Head Assembly Screw Combo Drive - Sharp Point Turbo Thread Lubricated, 3670000113961 250 - 250/Box

Würth Assembly Screw For Deeper Joinery and Thicker Stock

The Würth #8 x 2-1/2" flat head assembly screw is a lubricated, combo-drive fastener built for wood assembly work where the joint depth demands a longer screw. Turbo thread, underhead nibs, and a sharp point work together to seat cleanly in solid wood, cabinet panels, and engineered sheet goods.

Key Features

• Turbo Thread reduces driving torque and friction during installation, letting the screw move through material quickly without stalling the driver.
• Lubricated finish lowers resistance further so the screw drives smoothly through dense or layered stock without extra effort.
• Flat head with nibs mills its own countersink as the head seats, producing a flush finish without a separate countersink step in most wood-based materials.
• Combo drive accepts a #2 Phillips or a #2 square bit in the same recess, so the screw works with whatever driver is already in hand.
• Sharp point self-starts in softwood and engineered panels without a pilot hole in typical interior applications.
• 250 screws per jar keeps a working supply on the bench without managing a larger bulk container.

Where the 2-1/2" Length Earns Its Place

A 2-1/2" screw reaches into joints that shorter fasteners cannot hold reliably. Attaching a face frame to a cabinet box through combined stock thicknesses, connecting carcass panels where the fastener must pass through one layer and bite deep into another, or pinning shelf cleats and nailers into thick framing are situations where this length delivers the thread engagement that keeps the joint tight under load. The lubricated Turbo thread design means the screw covers that 2-1/2" without bogging down mid-drive, which matters when running through a stack of assemblies in a production setting.

Drive Flexibility and Clean Seating

The combo recess accepts a #2 Phillips or a #2 square bit in the same head. That matters in a shop environment where different tools may be in use on the same job, or when a bit change would slow the work. The flat head is fitted with underhead nibs that cut into the surrounding material as the screw seats, helping the head land flush without tearing up the surface. In hardwood or laminated stock, this removes the need to pre-countersink every hole, and the flush seat it leaves is clean enough for visible interior work.

Who Reaches for This Screw

Cabinet shops running face-frame attachment, drawer box construction, or case assembly find the 2-1/2" length useful anywhere the joint stack goes beyond what a 1-1/2" or 2" screw can bridge. Installers securing cabinet runs to walls or joining adjacent units through stiles also use this length when the combined material thickness calls for it. The jar pack suits a bench or cart — enough screws to finish a project without the bulk of a pail, and the jar stays organized in a tool bag or drawer.

Common Questions

The Right Length, Ready to Work

When the joint calls for a screw that reaches deep and seats clean, the Würth #8 x 2-1/2" assembly screw covers it — Turbo thread, combo drive, and a flush-seating flat head in a 250-count jar sized for the bench.