Us wire gauge chart8/16/2023 ![]() ![]() The ratio between successive sizes is the 39th root of 92, or approximately 1.1229322. n AWG wire isĭ_n = 0.005~\mathrmįor an m/0 AWG wire, use n = −( m−1) in the above formulas. (The 40 different sizes result in 39 size changes.) (Sizes with multiple zeros are successively larger than No. 0 and can be denoted using " number of zeros/0", for example 4/.) Therefore, the diameter of a No. The ratio of these sizes is 92, and between them are 38 sizes, with equal ratios between each adjacent pair of sizes. 2 Table of AWGs and approximate corresponding sizesīy definition, No. 36 AWG is 0.005 inches diameter, and No. 0000 is 0.46 inches diameter.In the same fashion, AWG is also commonly used to specify body piercing jewelry sizes, especially smaller sizes. That is, 8 gauge is about 1/8 inches in diameter. Note that for gauges 5 through about 14, the wire gauge is effectively the number of bare solid wires that, when placed side by side, span 1 inch. ![]() This seemingly-counterintuitive numbering is derived from the fact that the gauge number is related to the number of drawing operations that must be used to produce a given gauge of wire very fine wire (for example, 30 gauge) requires far more passes through the drawing dies than does 0 gauge wire. Increasing gauge numbers give decreasing wire diameters, which is similar to many other non- metric gauging systems. The steel industry uses a different numbering system for their wire thickness gauges (for example, W
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