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The Kreg #14 x 4 inch face frame and pocket-hole screw is built for joining thick lumber where a shorter screw simply does not reach. With a fine thread optimized for hardwood, a Type 17 Auger point, and a modified pan head, this screw is sized for deep pocket-hole joints in 2x material and other thick-stock assemblies.
Most pocket-hole screw lengths are matched to a specific stock thickness, and 4 inches is the specification for joints in stock that runs 2 inches thick and beyond. Framing members, thick furniture components, outdoor structural benches, deck railings, and heavy timber face frames all call for this length when the connection is made with a pocket-hole joint. A screw that is too short leaves the threads short of full engagement on the far side, reducing the holding strength of the joint. This screw is sized to reach all the way through the angled pocket and bite deep into the mating piece.
The fine thread is the correct choice when the mating piece is a dense hardwood such as oak, maple, or hickory. Coarse threads can spread wood fibers laterally in tight-grained species and cause cracking; fine threads track the grain more cleanly and build holding power through thread count rather than aggressive pitch.
Protec-Kote is a three-layer engineered coating, not a standard zinc plate. The layered system is designed to resist the copper compounds in ACQ-treated pressure-treated lumber that corrode plain zinc finishes over time. For outdoor pocket-hole work, including treated deck framing and exterior structural assemblies, this coating keeps the joint from developing rust staining around the fastener over the life of the structure.
The #3 square drive recess on this screw is designed for the torque demands of a #14 gauge fastener being driven into dense wood. The square socket is designed to hold the screw on a correctly sized bit for one-handed placement into the pocket, which matters when the pocket is angled and access is tight.
Cabinet shops building face frames from 2x hardwood stock, outdoor furniture makers working in thick treated lumber, and trim carpenters joining heavy millwork components all run into the same problem: standard pocket-hole screws stop at lengths designed for 3/4-inch to 1-1/2-inch stock. This screw picks up where those leave off. The 30-piece box suits the pace of specialty structural work, where joints are deliberate rather than continuous, and a small count keeps inventory tidy without running short on a critical connection.
A 4 inch pocket-hole screw is matched to stock that runs approximately 2 inches thick and up. For 3/4-inch or 1-1/2-inch stock, a shorter screw in the same family is the correct choice.
The fine thread is optimized for hardwood. For softwood, pine, or sheet goods like plywood and MDF, a coarse-thread version in the same series is the better fit.
Yes. The Protec-Kote three-layer coating is rated for use with ACQ pressure-treated lumber, which is why this screw suits exterior structural and deck pocket-hole joints.
This screw uses a #3 square drive bit, sized for the larger #14 gauge head. A #2 square bit will not seat properly in this recess.
The flat-bottomed pan head bears evenly against the pocket wall and pulls the joint tight without wedging into the wood the way a countersunk head would. That keeps the mating faces clamped flush rather than spreading the joint open.
When the joint is in thick stock, the material is hard, and the application is outdoors, this is the screw that checks all three boxes: 4 inch length, fine thread for hardwood, and a Protec-Kote coating built for treated lumber.
Sold In: 1 Box
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 1 Box |  KJSML-C4X400-75 Mfr# SML-C4X400-75 | Kreg #14 x 4" Modified Pan Head Face Frame and Pocket-Hole Screw Square Drive - Type 17 Auger Point Fine Thread Protec-Kote, SML-C4X400-75 - 75/Box |