What is the BWG gauge tube wall thickness closest to 1/8 inch?

To determine the BWG (Birmingham Wire Gauge) gauge tube wall thickness closest to 1/8 inch (0.125 inches), it is essential to understand the standard conversions between BWG gauge numbers and their corresponding wall thicknesses in inches.

The BWG system assigns lower numbers to thicker materials, meaning as the gauge number increases, the thickness decreases. For BWG, the wall thicknesses are defined as follows:

• A BWG gauge of 10 corresponds to a thickness of approximately 0.134 inches.

• A BWG gauge of 11 has a wall thickness close to 0.120 inches.

• A BWG gauge of 12 measures around 0.105 inches.

• A BWG gauge of 13 has a thickness of about 0.093 inches.

When we look for the closest gauge size to 1/8 inch, which is 0.125 inches, BWG gauge 11 at approximately 0.120 inches is just slightly under 0.125 inches, while BWG gauge 10, although thicker, exceeds that measurement. The remaining gauges fall significantly below 0.125 inches. Therefore, BWG gauge 11 is the most accurate match, making it the correct choice for