Talk:Drill and tap size chart

From Wikipedia, the free encyclopedia

You have new messages (last change).

[edit] UNF vs UNC

On the Drill and tap size chart, the chart shows a 10-24 tap uses a #25 drill. I am using a 10-23NF tap and both the tap and drill indes and a drill and tap set I bought from Home Depot made by Irvin use a #21 dirll. Is the difference because of the threading???

Robert Heard bobn5jmq@yahoo.com

Yes. See here --Coolhandscot 07:36, 19 August 2006 (UTC)
Retrieved from "http://en.wikipedia.org../../../d/r/i/Talk%7EDrill_and_tap_size_chart_6257.html"