Questions and answers on how to convert things from one unit or system to another
Forum rules
Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on
convert-me.com FaceBook pageThank you for being with us and sorry for any inconveniences this could caused.
Wed Aug 10, 2005 1:13 am
Trying to find out how to convert pitch threads on english bolts to metric and vice versa
Wed Aug 10, 2005 3:43 am
English bolts are threads per inch. The pitch, or inches per thread is the inverse of that.
Metric is millimeters per thread.
Since 1" = 25.4 mm, if you divide 25.4 by the threads per inch, you'll get the pitch in mm.
As an example, a 1/4-20 bolt has a 25.4/20 = 1.27 mm thread pitch (which would not be a standard metric thread). Standard metric bolts and screws have well defined rules for diameter and thread pitch.
More info
Powered by phpBB © phpBB Group.
