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The Quickscrews #10 x 4" flat head assembly screw is a coarse-thread wood screw with a Type 17 auger point, underhead nibs, and a #2 square drive. At 4 inches, it has the reach for through-bolting cabinet panels, joining thick stock, and securing hardware backing where shorter screws fall short.
Most cabinet and casework assembly screws run an inch and a half to two inches. The 4-inch length on this screw opens up a different set of tasks. It reaches through a full 3/4-inch panel and deep into solid framing behind it, making it useful for anchoring cabinet boxes to walls, securing heavy hardware backing blocks, joining doubled-up panels, or running a screw through thick softwood framing where shorter fasteners lose their grip. The coarse thread pairs well with solid wood and structural plywood in those applications, biting quickly and holding without backing out.
The Type 17 auger point carries a longitudinal flute that removes wood fibers ahead of the thread, lowering the force needed to drive the screw and reducing the splitting pressure on the surrounding material. This matters most in denser wood species and near edges where a standard sharp point would wedge the grain apart before the thread engaged. The nibs on the underside of the flat head work the same way at the surface: as the head seats, the nibs mill the wood around the shank hole, letting the head drop flush without a countersink bit. In hardwood or dense composite, that saves a setup step on every fastener.
Cabinet shops and millwork installers are the core audience. The box quantity fits a production environment, and the combination of a square drive, Type 17 point, and nibs reduces bit changes, pre-drilling, and surface prep on a run of identical joints. The 4-inch length also suits contractors securing cabinet runs to framing or installers building out thick backing for heavy shelving systems. Homeowners tackling a large project who need a screw with real reach into structural framing will find the same value. This is an indoor screw; the zinc plating is not rated for exterior or pressure-treated lumber environments.
In most softwoods and medium-density materials, the nibs seat the flat head flush without a separate countersink step. In very hard or dense woods, a shallow pilot countersink may still help the head seat cleanly.
A #2 square drive bit. The square recess is designed to hold the screw on a correctly sized bit for positive engagement during driving.
No. The zinc plating is suited for dry indoor applications. For pressure-treated lumber or exterior work, a screw with a corrosion-resistant coating rated for ACQ exposure is the right choice.
The 4-inch length is the right call when the fastener needs to pass through a full panel and reach deep into the material behind it, such as anchoring a cabinet to wall framing, joining doubled panels, or securing thick backing blocks. Standard 1-1/2" to 2" assembly screws do not have that reach.
The Type 17 auger point has a flute near the tip that cuts and removes wood fibers as the screw starts. This lowers driving torque and reduces splitting pressure in the surrounding material compared to a plain tapered point.
When the joint calls for a long assembly screw that starts cleanly, seats flush, and holds in solid wood or structural plywood, the Quickscrews #10 x 4" flat head with Type 17 auger point, underhead nibs, and #2 square drive is the practical choice for shop and site work alike.
Sold In: 1000 Each