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POCKET-HOLE JOINERY - 101
Pocket-Hole Joints are strong, as strong as mortise and tenon joints. Pocket-Hole Joinery is both fast and precise when using Kreg® Pocket-Hole Jigs.
Drilling and Setting the Pocket Hole Screw
When joining members with pocket hole screws, it is important that the screw's threads are embedded in the second piece only (piece A).
As seen, the screw's threads do not span between the two pieces to be joined. Selecting the correct screw length is essential. If the screw's threads bridge between the two pieces, then the joint will often fail to be pulled tightly together resulting in weak gluing. Use the following table as a guide for proper screw length:
1/2 in. to 5/8 in.
7/8 in. to 1-1/8 in.
1-1/4 in. to 1-3/8 in.
1-1/2 in & up
Setting the proper depth of the Stepped Drill Bit is also essential. The stepped drills have an adjustable depth stop collar that ensures proper depth. The smaller-diameter pilot-hole portion of the bit should completely drill through the first member (part B) and then drill a pilot hole in the second member (part A). The larger-diameter portion of the stepped drill bit will then cut the shoulder in the first part (Part B) at a depth that will allow all the threads to be embedded in the second part (Part A).
Selecting the Proper Screw Material and Thread Type
Indoor Applications - Unplated Dry Lube Screws
Selecting screws with the correct threads will provide maximum pull-out strength which will pull the joint tightly together. McFeely's branded screws come in four thread types for the following materials:
Fine Threads - For hardwoods such as cherry, mahogany, maple, oak, and walnut.
Coarse Threads - For softwoods such as cedar, fir pine, and poplar.
Super-Eight™ Coarse Threads - For softwoods for which coarse threads are used plus MDF and particle board.
PocketMax® - For joining 2x construction lumber or 2x pressure-treated lumber where a longger screws are needed.
Kreg® Micro Pocket-Hole Screws - For small projects using the Kreg® Micro jigs.
Outdoor Applications - Corrosion Resistant
McFeely's offers PocketMax® NoCoRode™ and 305-Stainless Steel Pocket-Hole screws.
Kreg® offers the Blue-Kote™ and 305 Stainless-Steel Pocket-Hole screws.
Which is the better screw head, pan or washer?
McFeely's pocket-hole screws are offered with an oversized pan head. This screw provides a large flat surface area underneath the screw head which makes solid contact with the hole prepared by the stepped pocket hole drill.
McFeely's also carries Kreg® pocket-hole screws which come in both washer-head and pan-head styles.
McFeely's believes either type of screw head is a good choice for pocket-hole joinery. Both the McFeely's® and the Kreg® pocket-hole screws are engineered for outstanding performance.