I'm looking to make a piece that requires a 20 tpi, but I want to keep the whole design metric, is there such a chart that can help me out or maybe someone can show me a simple how to calculation ?
I'm turning a 40 mm stock making two parts. 1 male (40 OD) and 1 female (40 ID ) part. Not really sure if the size of the stock will make a difference in my threads on the part, or will it ?
Ex.
Inch Metric
20 tpi - 2.5 mm