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This Würth #8 x 1-5/8 inch flat head assembly screw is built for interior wood assembly where a mid-length fastener pulls components together cleanly and seats flush. The coarse thread grabs softwood, plywood, and engineered panels efficiently, and the sharp point starts without a pilot hole in most production materials. A Black finish keeps the head low-profile against dark interiors and shop-built casework.
The 1-5/8 inch length sits in a useful range for cabinet and panel assembly. It is long enough to pass through a 3/4-inch face panel and thread solidly into a second member, and short enough to stay well clear of the opposite face on standard 3/4-inch sheet goods. That makes it a natural choice for attaching back panels, securing interior shelving, assembling drawer boxes from 1/2-inch stock, and fastening blocking or nailers inside a cabinet carcass. In production casework, having a single screw length that handles multiple joint types reduces bit changes and keeps the line moving.
The Black finish on this screw is an interior coating suited to dry, climate-controlled environments. It keeps the head visually recessed against dark substrates — painted MDF, black melamine, and prefinished interiors — where a zinc or bright steel head would catch the eye after installation. This finish is designed for indoor work; it is not rated for exterior exposure or high-humidity environments.
Cabinet shops running production lines keep this size on hand because the 1-5/8 inch length covers a range of carcass joints without switching boxes mid-run. Bench woodworkers assembling furniture from 3/4-inch panels find it pulls components together with enough bite to hold the joint while glue sets. Installers finishing interiors with shop-built casework reach for it when the head needs to disappear against a dark surface. The 5,500-count box is sized for volume users who drive screws by the thousand, not the hundred.
The sharp point self-starts in softwood, plywood, and most engineered panels without a pilot hole. In very dense hardwood close to an edge, a pilot hole reduces the risk of splitting.
Yes. The Black finish blends well against dark melamine, painted MDF, and prefinished interiors where a bright head would be visible after installation. It is an indoor finish and not intended for exterior or wet environments.
It works well when driving through 3/4-inch stock into a second member, or through 1/2-inch drawer-box material with solid thread engagement beyond. Check the combined thickness against the screw length before driving near panel edges.
In softwood and many engineered panels the flat head will self-countersink as it seats. In harder materials or when a perfectly flush finish matters, a countersink bit produces a cleaner result.
A standard #2 Phillips bit. That size fits most cordless drills and drivers already in use in cabinet shops and on install sites.
When the joint calls for a 1-5/8 inch fastener that seats flush, starts clean, and disappears against a dark interior, this Würth assembly screw covers the job without complication — and the 5,500-count box keeps a busy shop from running short at the wrong moment.
Sold In: 5500 Each
