This standard will cover the complete general, dimensional, mechanical, and performance data for metric prevailing-torque hex nuts and hext flange nuts of property class 5, 9, and 10 as defined in ASTM A563M.
ANSI/ASME B18.16M-2004 history
2004ANSI/ASME B18.16M-2004 Prevailing-Torque Type Steel Metric Hex Nuts and Hex Flange Nuts