Technicals: Fastener Thread Charts

Technicals: Fastener Thread Charts

Thread Chart Technical Information

View these charts to find useful information on metric and imperial threads and see how they compare.


  • Metric Coarse (M)
  • Metric Fine, Metric Extra Fine (MF, MEF)


  • Unified Coarse (UNC)
  • Unified Fine (UNF)
  • British Standard Whitworth (BSW)
  • British Standard Fine (BSF)
  • British Association (BA)

Metric and Imperial Fully Comprehensive Thread Chart and Comparisons
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