Gauge

Drill Size Chart — Fractional, Letter, Number & Metric (Master Reference)

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The Complete Drill Size Reference Why does this chart exist? Because someone at some point decided that drill bits should come in four completely different naming systems — fractional inches, letter sizes (A–Z), number/gauge sizes (#1–#97), and metric. And engineers need to convert between all of them constantly. This master chart lists all standard drill … Read more

Sheet Metal Gauge Chart — Steel, Stainless Steel, Aluminum & Tubing

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What is Sheet Metal Gauge? Sheet metal thickness in the US is specified by gauge number rather than direct measurements. Confusingly, the gauge-to-thickness relationship is different for different metals. A 16-gauge sheet of steel is not the same thickness as 16-gauge aluminum. The tables below give you the actual thickness in inches and millimeters for … Read more