ASME B18.8.2 is a standard published by the American Society of Mechanical Engineers (ASME) that provides specifications for "Tapping Screws and Metallic Drive Sinks".
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The ASME B18.8.2 standard can be purchased and downloaded as a PDF from the ASME website or other standards repositories. The PDF typically includes detailed specifications, tables, and figures that provide the necessary information for designing, manufacturing, and testing tapping screws and drive sinks. Asme B18.8.2 Pdf