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The Kreg SML-C150 is a #8 x 1-1/2 inch washer head pocket-hole and face frame screw built for coarse-thread applications in softwood, plywood, MDF, and other sheet goods. The combination of a washer head, square drive, and Type 17 auger point makes it a dependable choice for pocket-hole joinery where a 1-1/2 inch length suits the joint at hand.
A 1-1/2 inch pocket-hole screw is a common choice when joining 3/4-inch stock to thicker members, or when pocket-hole jig settings call for a longer fastener than the standard 1-1/4 inch recommendation for two pieces of 3/4-inch material. It also suits applications where the receiving piece is a 2x or thicker component and additional thread engagement is needed. Pocket-hole joinery in cabinet boxes, furniture frames, and utility shelving are typical fits. Because this screw carries a coarse thread, it works best in softwood species like pine and poplar, as well as plywood, MDF, particleboard, and melamine-laminated panels. For hardwood face frames in maple, oak, or cherry, a fine-thread version is the correct choice.
The washer head on this screw provides a broad, flat bearing surface that seats against the angled pocket wall and draws the joint tight without the head burying into the wood. This head profile is the standard for pocket-hole work because it distributes clamping force rather than concentrating it at a narrow point. The #2 square drive recess is designed to hold the screw on a correctly sized bit, which matters when you are reaching into a cabinet interior or working in a tight corner where repositioning the bit costs time. The Type 17 auger point features a fluted tip that cuts and clears wood fibers ahead of the thread, helping the screw start cleanly and drive with less resistance in the substrate.
This screw is a practical fit for cabinet shops assembling face frames from pine or poplar, woodworkers building furniture carcasses in plywood or MDF, and contractors installing built-in millwork where the pocket-hole method keeps the joint hidden and the surface clean. The zinc finish is suited to dry indoor environments, which covers the vast majority of cabinet and furniture applications. Packs of 100 work well for shops that rotate through several screw sizes and prefer to keep quantities manageable, or for installers who need a reliable supply of a specific length without committing to a larger pail.
For two pieces of 3/4-inch softwood joined face-to-face or at a pocket, the typical recommendation is 1-1/4 inch. The 1-1/2 inch length is well suited when one of the members is thicker than 3/4 inch, or when the pocket-hole jig's setting chart calls for this length based on your specific stock thickness and joint geometry.
This screw carries a coarse thread, which is designed for softwood, plywood, MDF, and similar sheet goods. For hardwood face frames in maple, oak, cherry, or similar species, a fine-thread pocket-hole screw is the correct choice. Coarse threads can strip or provide reduced holding power in dense hardwood grain.
This screw uses a #2 square drive. A correctly sized #2 square bit seats fully in the recess and allows the screw to be held on the bit for placement.
The screw works with any pocket-hole jig that produces an angled pocket sized for a standard #8 pocket-hole screw. Kreg jigs are the most common, but the screw is not limited to them.
No. The zinc finish on this screw is rated for dry indoor use. For outdoor or pressure-treated lumber applications, a screw with a coating rated for exterior exposure is the correct choice.
When the joint calls for a 1-1/2 inch coarse-thread pocket-hole screw in softwood or sheet goods, the Kreg SML-C150 delivers the washer head profile, square drive retention, and Type 17 auger point that keep production moving and joints tight.
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