Regarding the marking and identification of Whitworth threads
Thread Content
I need to make several thread plugs here, with threads of 1-5/16 and 1-5/8. Using a 55° thread gauge, the measurement is 12; I checked and found that the standard is 12 teeth per inch. How can I determine whether these are coarse threads or fine threads?
This post was last edited by Looking up at the starry sky oyer on 2017-4-24 23:55. You can check it in the thread size data table, or simply indicate 1-5/8-12UN and 1-5/16-12UN; there’s no need to distinguish between UNC and UNF