This Standard contains general metric standards fora 60 deg symmetrical screw thread with a basic ISO 68-1profile designated M profile. The M profile threads oftolerance class 6H/6g are intended for metric applicationswhere inch class 2A/2B have been used. At theminimum material limits, the 6H/6g results in a looserfit than the 2A/2B. Tabular data is also provided for atighter tolerance fit external thread of class 4g6g, whichis approximately equivalent to the inch class 3A but withan allowance applied. Formulation and tolerancing datais included for applications requiring other fits.
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Published: 03/10/2006 ISBN(s): 9780791829950 ANSI: ANSI Approved Number of Pages: 84 File Size: 1 file , 810 KB