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The Würth #8 x 3" Washer Head Assembly Screw is built for cabinet and woodworking joints where full penetration through thick stock is the goal. The 3-inch length drives through stacked panels, doubled-up framing, and deep case joinery where shorter screws simply do not reach.
Most cabinet and casework assembly calls for screws in the 1- to 2-inch range, but there are joints where that is not enough. Attaching a back panel through a thick applied side, fastening through a doubled bottom into a stretcher, running a screw through a shelf standard backer, or tying a heavy face frame to a deep cabinet box — these are the situations where 3 inches of thread engagement changes the result. The extra length keeps the fastener anchored in solid material rather than threading out the far side into open air. For shops assembling furniture carcasses with thick engineered panels or building frameless cabinets with reinforced mounting rails, this length fills a real gap in the fastener drawer.
The washer head spreads clamping force over a broader footprint than a pan or flat head, which matters in particleboard and MDF where a narrow head can pull through under load. The nibs on the underside of the head mill into the surface as the screw seats, helping the head settle flush without tearing the face of laminates or melamine. The turbo thread geometry is designed to reduce the driving resistance that builds up over a long shank — useful at 3 inches, where a standard thread profile would require noticeably more torque to fully seat. The lubricated finish carries that further, lowering friction throughout the drive cycle and reducing wear on both the bit and the drive recess across a full production run.
Cabinet shops building frameless cases with thick applied ends, millwork teams assembling deep storage units, and finish carpenters attaching heavy built-in components to wall backing are the most common buyers. The 1000-piece box suits production environments where this length is a regular pull rather than an occasional request. If a job regularly involves stacking two 3/4-inch panels or running screws through a full inch of stock into a second member, keeping a box of 3-inch assembly screws on the bench eliminates the need to reach for a different fastener mid-run.
The turbo thread and sharp point are suited for particleboard, MDF, melamine-faced panels, softwood, and solid wood. For very dense hardwoods, a pilot hole is worth the extra step at this length.
Yes. The combo recess accepts a standard #2 Phillips bit or a #2 square bit. Either works; the square drive holds on the bit more securely if one-handed placement matters in your workflow.
At longer lengths, the screw develops more clamping force as it seats. A washer head spreads that force over a larger area, which reduces the risk of the head pulling into or through the face material, especially in engineered panels.
The lubrication is a dry-to-the-touch coating on the screw surface. It is intended to reduce driving friction, not to coat the surrounding wood. It does not present a meaningful glue-adhesion concern in standard assembly work.
No. This is an indoor assembly screw. For exterior or moisture-exposed applications, choose a corrosion-rated fastener matched to the exposure level.
When the joint is thick and the load is real, 3 inches of thread engagement does work that a shorter screw cannot. This Würth assembly screw delivers that reach with the head geometry, thread design, and drive flexibility that production cabinet and millwork work demands.
Sold In: 1000 Each
