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The Würth #8 x 2-1/2" flat head assembly screw is built for cabinet carcass work, case assembly, and wood-to-wood connections where you need thread engagement deep into a second member. The Type 17 Auger point starts cleanly, the coarse thread grips solidly in wood and sheet goods, and the milling nibs under the flat head seat flush without a separate countersink step. A #2 square drive keeps the bit on the screw through every fast drive cycle.
At 2-1/2 inches, this screw has the reach to fasten through 3/4-inch material and bite well into the member behind it, making it useful for attaching cabinet backs to frames, securing shelf cleats, and assembling case sides to tops and bottoms in production cabinetry. It also works for face-frame attachment to the box where combined stock thickness demands more thread engagement than a shorter screw can deliver. The coarse thread and Type 17 Auger point handle the full range of cabinet sheet goods: plywood, particleboard, and MDF all hold this thread reliably.
The flat head profile countersinks flush when driven into wood or wood-based panels. The milling nibs under the head do the countersink work as the screw seats, so the head sits level with the surface rather than proud of it. The black finish suits interior cabinet work where the screw head sits against dark or painted surfaces and a light zinc head would stand out. This finish is for dry indoor use.
Packed 2500 to the pail, this screw is sized for cabinet shops and assembly operations running through fasteners at production pace. Pail packaging is convenient for movement around the shop or to the job site. The #2 square drive is consistent across a full pail run, so one bit handles the entire box without a changeover. For shops building face-frame or frameless cabinets in volume, the combination of fast-starting Type 17 Auger point, self-countersinking nibs, and square drive reduces the number of steps per joint and keeps the line moving.
It gives the screw enough reach to pass through 3/4-inch panel stock and still thread deep into the receiving member. That thread depth is what provides pull-out resistance when the joint is under load.
The nibs on the underside of the flat head mill their own countersink as the screw seats. This lets the head sit flush with the surface without a separate countersink drill operation, which saves a step in production work.
The square recess is designed to hold the screw on a correctly sized bit for one-handed placement. That benefit depends on using a properly sized square bit — a worn or off-spec bit will not provide the same hold.
Yes. The coarse thread and Type 17 Auger point are well suited for plywood, particleboard, and MDF in addition to solid wood. Coarse thread pulls out more material volume per revolution in low-density engineered panels, which supports holding power in those substrates.
The black finish is rated for dry indoor use. This screw is not recommended for exterior applications or environments with sustained moisture exposure.
When the assembly calls for a screw that reaches deep, seats flush, and drives fast through a full production run, the Würth #8 x 2-1/2" flat head assembly screw covers that need from the first joint to the last fastener in the pail.
Sold In: 2500 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 1 Each |  WW90210 Mfr# 0614176153961 1 | #2 x 1" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90220 Mfr# 0614176139961 1 | #2 x 2" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90230 Mfr# 0614176140961 1 | #2 x 3" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90240 Mfr# 0614176142961 1 | #2 x 4" Square Drive Insert Bit, 2 Piece Bit | ||||
Sold in: 1 Each |  WW90260 Mfr# 0614176143961 1 | #2 x 6" Square Drive Insert Bit, 2 Piece Bit |