Now that we have discussed some of the basics, it is time to guide you through what you need to know. Finding the right type and specifications will hold materials together nicely. Types The second number expresses the number of threads per unit of distance in between these threads. You can also refer to it as the thread pitch. If you have a 4-30 x 0.10, the threads per inch (TPI) is 30.

An M8 screw has a diameter of 8mm. It has a pitch thread of 1.00mm for fine and 1.25mm for standard. M10 For the most accurate length, measure using millimeters from where the screw head sits to the tip. You don’t always measure from the top of the head. It depends on where the head would sit on the surface. Use a ruler or a measuring tape to get the most accurate measurement.

The imperial system uses inches when getting the length from the tip to where the head rests and the diameter. The measurement should start wherever the head rests. Bolts and screws are integral parts of fastening or putting together things. Several people assume that these two materials are the same, but they are different. Physically, they look similar. They are still unique fasteners in terms of application. Fine-threaded screws are best used with pre-tapped holes. The closer distance between these threads allows a tight hold. However, it would take a longer time to remove or install. The gauge sizes do not have a direct connection with the actual head size. When measuring the length of a flathead screw, start on top of the head down to the stem. On the other hand, start from the bottom of the head down to the stem for other types. The gauge and length determine the size.

The first step in measuring the length is finding a surface to lay it down on an even surface. Start measuring wherever the head would rest when fully embedded into something. In some cases, you may need to hang it off the edge of a surface to lay it flat. Ones with a pan, round, or truss head should be measured from the bottom of the head to the tip. Ones with a flat or oval head should be measured from the top to the tip. Hex head ones are an exception to this rule, which means you need to measure from the bottom of the head. You can use a multi-material one in several materials, such as drywall or sheet metal. Wood and plastic ones are also good options. Concrete Lastly, you need to measure the distance from one thread to another. It’s also referred to as the pitch. In the metric system, we use pitch instead of thread spacing. To get this final measurement, use a ruler or measuring tape. In most cases, the pitch would only measure less than 1 mm. It is recorded in a decimal point of an mm. Depending on the application, they come in different forms and sizes. Here are some of the most common ones. Cement BoardShould you see the letter M, it means the measurement is in millimeters. For example, M5-0.4 x 10 has a major diameter of 5 mm. For example, a #0 gauge is 1/16 inch in diameter. A #1 gauge is 5/64 inch, and a #2 gauge is 3/32 inch. For round-headed ones that are countersunk, start measuring where the countersunk and the oval top meet in the middle. To put it simply, this is where the oval top would rest on the surface.