A screw’s diameter is called its gauge. heremon gauges are between 2 and 16 in diameter . An 8-gauge screw is a good general-purpose size. Heavy materials require a gauge of 12 to 14. Fine applications, such as woodworking, may require a 6. When screwing into the end grain, aim for at least two inches of thread in the board. As a general guideline, you can use #8 diameter deck-type screws for most utility tasks. Use 1-1/4 inch screws for basic tasks where strength is less of an issue or when attaching two 3 / 4-inch-thick … Use this screw selection chart for selecting the correct size and length of screw for any job. This chart is designed for flat-head screws but can be used for any type. The column on the right shows the size of the pilot hole to be drilled for starting the screw .

Deck Framing. These screws should be at least 1/ 2 inch in diameter if they will support the weight of the deck, and the point should sink at least 1 1/2 inches into the stationary member. Thus, 4 inches would be the minimum length of a lag bolt used to attach a 2-inch board. The Best Screws to Use for 2x4 Framing By Wade Shaddy. SAVE; heremon screw for joining two-by-fours is hardened steel, structural, No. 9, 2 1/2 inches long with a Phillips head. One important yet often overlooked aspect is screw tip or driver size . The other factor is the screw’s diameter , or gauge. Screws come in gauges 2 through 16. Most of the time you’ll want to go with a #8 screw .

If you're joining them face to face, that's 3 inches thick. A 3 inch long construction screw is ideal, but if you sink the screw head below the surface too far, the tip will blow out the other side. A 2-1/2 inch screw only goes into the 2nd 2x4 halfway, giving you only about an … The charts below helps to select the correct screw type when joining like thicknesses of wood (ie. 3/4” (19mm) to 3/4” (19mm) material) in both a frame and right angle application. This depends on the type of screw , but 1 5/8-inch coarse thread #6 screws will yield about 200 screws per pound. Drill-driver bit to use : For most drywall screws , you will generally use a #2 Phillips head drill-driver bit.

Choose the Correct Screw Length. posted 6/16/2015 in Kreg Tool Tips: Joining by Kreg Tool Company Selecting the correct Kreg Screw length is easy; it’s based on the thickness of your material.