MIL-STD-115 Revision B, March 15, 1963
GAGES,PLUG,THREAD HI (NOT GO)FOR UNIFIED/THREADS
Includes all amendments and changes through Cancellation Notice 1, April 16, 1997
Additional Comments: CNCL NO S/S
This standard covers pertinent design data and Mil-Std Part Numbers for American Gage Design Standard, single end, HI (not go), right-hand thread plug gages for the inspection of the maximum limits of Unified Standard Classes 1B, 2B, 3B and American National Standard Classes 1, 2, 3 internal threads.
The maximum limits of certain standard internal threads are identical for both the Unified Standard and American National Standard thread systems for the same nominal size and threads per inch. In these particular cases one part number is applicable and the thread designation is combined (i.e., 2500-20UNC-3B-2).
The design data for not go thread plug gages employs class "X" gage manufacturing tolerances in accordance with the U.S. Department of Commerce Handbook H28 "Screw-Thread Standards for Federal Services".