The Gravesend Model Marine
 and Engineering Society

Thread size crossover

This is a useful chart for comparing small threads. It covers BA, BSF, BSW, UNF, UNC and Metric. The data includes: thread OD and tapping drill size, both in imperial and metric. Also included is the imperial pitch.

The chart is in PDF format so can be either viewed online or downloaded as required.

As the chart is in the form of a PDF (Portable Document Format) file, you will need to have Adobe Reader installed on your PC. If you do not already have this application, it is freely available for download via the 'Get ADOBE READER' link below.

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