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The Kreg SPS-C1 is a #7 x 1-inch coarse-thread pocket-hole and face frame screw designed for joining softwood, plywood, and sheet-good panels in cabinet and furniture construction. The modified pan head, square drive, and Type 17 auger point work together to pull joints tight, start cleanly, and seat without pulling through the pocket wall.
At 1 inch, this screw is sized specifically for 3/4-inch softwood stock, the standard thickness for cabinet face frames built from poplar, pine, or soft maple. Driven through an angled pocket bore, it draws the rail flush against the stile and holds the joint while glue sets or during assembly. The same screw works for joining plywood cabinet box panels at the corner, attaching a plywood back into a rabbet, and connecting shelf cleats to cabinet sides. For shops building softwood or sheet-good casework, one screw handles most of the common pocket joints in the box.
The modified pan head has a flat bearing surface that seats against the angled pocket wall rather than digging into it. This matters in narrow face frame stock, where a countersunk or bugle head would wedge and risk splitting the stile. The #2 square drive recess is designed to hold the screw on a correctly sized bit, which is useful when pocket positions are tight and a second hand cannot steady the fastener. Both details reduce fumbling and rework during a high-repetition face frame assembly run.
Coarse-thread pocket-hole screws outperform fine-thread in low-density materials. The wider thread spacing in a coarse thread bites deeper into softwood and engineered panel fibers, producing better pull-out resistance than a fine thread would in the same material. This makes the SPS-C1 the correct pairing for pine or poplar face frames, plywood cabinet boxes, MDF drawer components, and melamine-faced panels. For hardwood face frames in oak, maple, or cherry, a fine-thread variant is the better match.
Yes. One inch is the standard pocket-hole screw length for 3/4-inch stock. At that length, the screw engages the mating piece without breaking through the far face.
The screw is designed for pocket-hole joinery, which is typically cut with a jig, but a jig is not strictly required. The angled pocket can be bored by other means as long as the angle and depth match the screw geometry.
Coarse thread holds better in softwood, plywood, MDF, and melamine because the wider thread spacing bites deeper into low-density fibers. Fine thread is the correct choice for dense hardwoods like oak and maple.
A #2 square drive bit. The square recess is designed to hold the screw on a correctly sized bit for placement in tight pocket positions.
This screw is for dry, indoor applications. Zinc plating provides standard corrosion resistance in climate-controlled environments and is not rated for exterior or high-humidity exposure.
The Kreg SPS-C1 in coarse thread covers the most common pocket-hole joints in a softwood or sheet-good cabinet build, keeping the workflow moving without swapping between screw types mid-project.
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