![]() Hence you should know both thicknesses in order to determine the hole diameter. Always drilled holes should be equal to or larger than the wire size. When you drill for screws, this guide will help you to find the drill bit sizes for screws.ĭrill bit size is very important for wirings. You can use below drill bits when you drill a hole for 3 conductor wires. 3 conductor wires have different size gauges. ![]() Comparing sizes between wire and drill bits becomes very simple. I would like to try my hand at some simple riveting exercises, but need a bit of a start with this Hi Stephanie, I would suggest aquiring a set of vernier calipers (mine are electronic). Wire Gaugeĭrill bit sizes for 2 conductor wires Drill Bit Size for 3 Conductor Wiresģ conductor wires and 3 core cables are the same in name and have 3 conductive cables inside the single wire. I would like to find some kind of chart that matches up wire gauges with drill bit sizes. It helps to find any drill bit related to the mm or inches easily. I have prepared a guide to find drill bit sizes in inches and mm. The numbered gauge system (often referred to as wire gauge) provides an even more detailed sizing scale, especially for smaller drill bit sizes. When you drill a hole for 2 conductor wires you can select drill bit sizes from below table. Therefore, there are no standard fractional drill bits that are the exact 11/100 fraction that the 35 drill bit is. Wire gaugeĭrill Bit Sizes for Single Wires Drill Bit Size for 2 Conductor WiresĢ conductor wires, double wires, and 2 core cable wires are the same wires that have 2 wires in a single cable.īoth cables are coated with electrical insulations. However, standard fractional drill bits come in intervals of 1/64 inches. So let’s see what are the suitable drill bit sizes for each wire size. ![]() There are 25.4 millimeters (mm) in an inch. Below we converted the fractions to decimals so you can compare more easily: 11/64 0.171875 inches. When you choose a drill bit for a wire, it should be more or equal to the diameter of the wire (including insulation and conductor). Caution: Due to rounding, a 11/64 drill bit will make the hole smaller than a 15 drill bit and a 3/16 drill bit will make the hole larger than a 15 drill bit. Standard wire sizes and insulation thickness for Poly(Vinyl Chloride) Insulations Drill Bit Sizes For Single Conductor Wires As a result of this, the wire diameter will be increased due to this layer. According to the voltage and current, the layer’s thickness varies. These standard wires are insulated with Poly (Vinyl Chloride) in order to prevent the current leaking. You can measure 1/16″ to 1/2″ range of drill bits using that gauge.The drill bit size should be equal or more than the wire size As for me I use this gauge to quickly identify the drill bit size in inches and millimeters. 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. Each drill bit features a 118-degree standard point configuration for general purpose drilling applications. Diameters fall between standard fractional sizes. The bits drill an exact hole size, making them ideal for tapping. Fractionĭrill Bit Sizes in inches and mm table Drill Bit Size Conversion Methods 1. Wire gauge drill bits are used in wood, metal and plastic applications where more precisely sized holes are required. You can see fractions, inches, and mm values for each drill bit size here. How to Convert Drill Bit Inches to mm?īy following the above method, this table has been prepared with available drill bit sizes.
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