Furthermore, if you do not have the right boring equipment, this task may appear to be impossible or difficult.īecause rock is such a hard material, drilling through it can be difficult. Because the rock is a strong and solid material, this drilling demands a lot of strength and force. You can measure 1/16″ to 1/2″ range of drill bits using that gauge.You might have to drill through rock for a variety of reasons. As for me I use this gauge to quickly identify the drill bit size in inches and millimeters. You can see fractions, inches, and mm values for each drill bit size here. Drill Bit Size Chartīy following the above method, this table has been prepared with available drill bit sizes. The below table will introduce you to the fractions and decimals of the inches with mm. So we have to interchange the metric units and imperial units. Inches are really popular in the USA but, beyond that, mostly used SI units. You can multiply by 25.4 of inches value when you convert that to mm.Įx – 0.5 inches = 1/2″ = 0.5 inches × 25.4 = 12.7mm When you measure drill bit size in inches, you can convert it into mm using this method. Hence measure it as much as possible accuracy. Practically, you may not be able to measure the drill bit diameter more than 2 decimal places. You can check fraction and decimal conversion using the below table. When drill bit diameter size is available in mm it can convert into inches easily. When you use this you have to convert each with different units types. Drill bit diameter is the most important factor in the drilling process and it should know precisely as much as possible to sharpen or tolerate the diameter.Īll over the world, one of the metric or imperial units is used as the general unit. Most are measured by the metric units and in the USA it’s imperial units. Drill bits are available in different materials, lengths, and diameters.
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