The thread was definitely straight, not tapered. Fortunately, we have been able to get around the call out issue easily because we had to have a quartz part machined which would match the Japanese Teflon fitting. Therefore, on the drawing, we called out the pitch and the diameters needed. The...
Thanks Mark for taking the time to respond. I'm pretty sure you're correct in saying the threads fall into the Japanese JIS system. What didn't add up to us was that the minor and the major didn't fall on round mm's. But maybe the Japanese doesn't pay any attention to this as does the normal...
I have a Japanese Teflon fitting which has a thread which measures 1.188" (30.18mm) for the major, 1.078" (27.38mm) for the minor and has a pitch of 14 to the inch or .551 threads per mm. <br>
Does anybody know what the callout for this is or where to find the info?
