A ruler is all you need to determine thread count and size. If the measurement says 1/4-20, it means it has a diameter of 1/4 inch and 20 threads per inch. To measure screw size, we take its diameter. The number will also tell if a screw can thread through a bolt. We use the TPI to determine the thread’s fineness. The latter is also commonly referred to as threads per inch (TPI) or thread pitch. When looking into and determining screw size dimensions, there are two things you need to understand – the length and the thread count. It has a diameter of 10mm and comes in several lengths. The M12 is even wider and can shoulder heavier loads. The M10 screw has the widest diameter among these six kinds. It has a pitch thread of 1.00mm for fine and 1.25mm for standard. We typically use the threads mentioned above in rack applications. A sample application of an M6 is attaching the equipment to the vertical uprights of a rack. It comes in several thread pitches, such as 12-24 and 10-32. The M5 screw size in inches is the equivalent of 0.19685 inches. Some have an anti-corrosive finish to prevent rust from building up. The M5’s dimensions are significantly thicker than an M4 but can be used in several applications. The M4 screw size in inches is the equivalent of 0.15748. The M4 comes in several lengths but shares the same diameter of 4mm. M4Īn M4 screw is slightly larger than an M2. If the measurement reads M2 x 8, the diameter is 2mm and has a length of 8mm.īrass, nylon, stainless steel, steel, aluminum, and titanium are a few of the materials used in fabricating this type. Some manufacturers offer non-standard pitches, so it is best to reach out to them for any concerns in customization. Do keep in mind that in reality, the actual diameter would vary between 1.9mm to 2mm because of manufacturing tolerances. The “M” corresponds to the outer diameter in the metric system, so an M2 has a diameter of 2mm. They’re also common in laptops and the like. We use the M2 screw in small items, such as electrical equipment, cameras, and mobile phones.

STANDARD SCREW SIZES & THREAD DIAMETER CHART These standards dictate things like thickness and screw thread. ASME is the organization that is in charge of a lot of the standardization work. Here’s the standard & metric screw size chart you need to help you find the right products at the shop! It doesn’t matter if you’re working outside or on furniture. The M10 screw size has a diameter of 3/16 inches.The M8 screw size has a diameter of 5/32 inches.The M6 screw size has a diameter of 9/64 inches.The M5 screw size has a diameter of 1/8 inch.The M4 screw size has a diameter of 7/64 inches.The M2 screw size has a diameter of 1/16 inch.However, here’s a quick overview from the chart: The easiest way to figure those out is to consult our screw size chart below. Metric & standard bolt screw sizes are determined by length and thread count. Should you decide to go with the latter, it is less time-consuming to drill all holes first before installing the screws.

Screws are self-tapping, but you still have the option to drill a hole for it. Other types are used for drywall and concrete. They come in several types and sizes, which you can use in metal and wood. The threads provide a sturdy grip, allowing them to meet the requirements of any project. Screws are very versatile, making them a popular choice among people. They are still unique fasteners in terms of application. Several people assume that these two materials are the same, but they are different. Bolts and screws are integral parts of fastening or putting together things.

Actual size metric mm chart