29 August 2015
Solving the Thread Mystery
In a perfect world, all thread sizes would be standardised, but that is unfortunately not the case. Today, machinery and vehicles use mainly metric thread, or Unified National Coarse (UNC) and Unified National Fine (UNF). Other less common threads include British Standard Whitworth (BSW), British Standard Fine (BSF), American National Fine (ANF) and American National Coarse (ANC).