Thread: British threading vs ISO threading compatibility
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Old 05-01-24 | 10:43 AM
  #14  
DiTBho
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Bikes: Moser Forma/Campagnolo 8sp, Litespeed Classic/Campagnolo 8sp

BC1 is not equal to BSC/1"

see here, "all sizes 1⁄4 inch and larger use 26 tpi, making them similar to 1 mm ISO, which are 25.4 per inch and also run at a 60 degrees angle"

BC1" -> 25TPI, 60 degrees
BSC/1" -> 26TPI, 60 degrees
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