This gives the depth to allow for a full thread in a nut or similar piece of work for threads for 2 to 90 per inch, regardless of the diameter. A special nut for a 2-inch bolt, 20 threads per inch, U. S. Standard would have a hole 2. 1.93505 inches in diam eter bored in it. .06495 SIZES OF TAP DRILLS FOR TAPS WITH "V" THREAD more convenient in some cases. This table gives similar information but in a way that would be |