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The Kreg #8 x 1-1/4 inch coarse-thread face frame and pocket-hole screw is sized for joining 3/4-inch softwood face frame members and softwood panel joinery. The washer head pulls a tight joint without pulling through narrow stock, and the square drive holds the bit securely during installation.
At 1-1/4 inches, this screw is the standard size for pocket-hole joints in 3/4-inch softwood face frame stock. That covers rail-to-stile joints, face frame attachment to cabinet boxes built from pine or poplar, and similar furniture joinery in softwood or softwood plywood where the combined stock thickness calls for a shorter fastener. The coarse thread is the correct choice for these materials: it bites deeper into softer fiber and delivers better pull-out resistance than a fine thread would in the same substrate. For hardwood face frames in maple, oak, or cherry, a fine-thread version is the appropriate choice instead.
The washer head on this screw is flat-bottomed and wide enough to bear against the pocket wall and distribute clamping force evenly, which is what keeps the joint pulled tight without the head sinking into the wood. The Type 17 Auger point features a fluted tip that clears wood chips as the screw advances, which lowers driving torque and helps keep the material from splitting near the joint. The #2 square drive recess is designed to hold the screw on a correctly sized bit, which matters when reaching into pocket angles that make two-handed placement awkward.
This box suits a cabinet shop, finish carpenter, or serious woodworker building softwood or pine face frames, assembling furniture carcasses, or working through smaller production batches where a 100-count box fits the pace of work. It is also a practical choice for job-site installers who carry a supply of the most common pocket-hole size without loading up on bulk quantities. This screw is for interior work only. The zinc finish is appropriate for dry indoor environments; it is not rated for exterior or treated-lumber applications.
Coarse threads have wider, deeper spacing that grips the larger fiber structure of softwood and sheet goods more aggressively than fine threads, which gives better pull-out resistance in pine, poplar, and softwood plywood. Fine-thread versions are the correct choice when working in hardwood.
The 1-1/4 inch length is the standard for pocket-hole joints in 3/4-inch softwood stock. It provides enough thread engagement in the mating piece without breaking through the far face.
The square recess is designed to hold the screw on a correctly sized bit for one-handed placement. That behavior depends on using a properly fitting #2 square bit; a worn or undersized bit will not provide the same hold.
Yes, for softwood face frames attached to softwood or plywood cabinet boxes where the combined stock thickness is appropriate for a 1-1/4 inch fastener. For thicker combined stock, a longer length would give better thread engagement in the second piece.
No. The zinc finish on this screw is rated for dry interior environments. It is not suitable for exterior, wet, or pressure-treated lumber applications.
When the job is 3/4-inch softwood face frames or panel joinery and the count fits a 100-piece box, the Kreg SML-C125 gives you the right length, thread, head, and drive to pull the joint together cleanly and keep it there.
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