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The Würth #8 x 1-3/4 inch ASSY flat head assembly screw is built for cabinet carcass construction, panel joinery, and casework assembly where a mid-length screw threads cleanly through one panel and grips securely in the next. The sharp point self-starts in wood-based materials, the coarse thread pulls joints tight, and the flat head with nibs seats flush without a separate countersink step. Packed 500 to the box with a compatible RW20 bit included.
Cabinet carcass assembly commonly involves joining 3/4-inch panels face-to-face or edge-to-face, where a screw needs to pass through the leading panel and bury its threaded section fully in the receiving panel. At 1-3/4 inches, this screw clears that combined thickness with thread engagement to spare. It is the right reach for box sides to bottom panels, stretcher rails to case sides, and similar panel-to-panel connections that define a cabinet box. The length also works well when driving through a thinner face member into a thicker substrate, such as a 1/2-inch panel back against a solid rail or stile.
The flat head countersinks flush with the panel surface, which matters on cabinet interiors where proud fastener heads interfere with drawer boxes, shelf standards, and other installed components. The milling nibs on the underside of the head cut a clean countersink seat as the screw is driven, so the head lands flush without needing a separate countersink bit run first. This is a real time saver on production carcass work. The RW20 drive delivers the torque needed to pull joints tight in hardwood panels without stripping the recess. The compatible bit is included in every box, so the first run does not require a separate bit order.
This screw is well matched to cabinet shops building face-frame and frameless carcasses in softwood plywood, hardwood plywood, MDF, and particleboard. The sharp point and coarse thread combination handles the range of engineered panels a production shop works through in a typical day without changing screw specifications between substrates. Site installers assembling pre-built cabinet components or making field modifications to cabinet boxes will find the 500-piece box a practical quantity for a single kitchen or bath install. The zinc finish is appropriate for climate-controlled interior environments — standard kitchen, bath, and built-in cabinetry fall well within its range.
When joining two 3/4-inch panels, the screw passes through the near panel and seats its threaded section into the mating panel, giving solid thread engagement. The length is also suited for driving through thinner face stock into a thicker backing member.
No. The milling nibs cut their own countersink seat as the screw is driven, allowing the flat head to sit flush without a separate countersink operation. This is most effective in hardwood, softwood, and laminated wood panels.
This screw uses the RW20 drive. A compatible RW20 bit is included in every 500-piece box.
Yes. The coarse thread engages the fiber matrix of MDF and particleboard effectively, and the sharp point self-starts in those substrates without a pilot hole in most cases.
The zinc finish is suited to dry indoor applications. This screw is intended for interior cabinet, casework, and woodworking assembly — not for exterior or high-humidity environments.
Five hundred screws and an included RW20 bit in one box means the carcass assembly run starts without a separate hardware order. Choose this 1-3/4 inch ASSY screw when the job calls for a flat head, flush-seating fastener that threads solidly through standard cabinet panel stock.
Sold In: 500 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 10 Each |  WW06147020 Mfr# 061470 20 961 10 | RW20 ASSY Insert Drive Bit |
