ASME B16.11

Note: 

•All dimensions are in millimeters 

•Upper and lower values for each size are the respective maximum and minimum dimensions. 

•Average of socket wall thickness around periphery shall be noless than listed values. The minimum values are permitted in localized areas.

ASME B16.11

Note: 

•All dimensions are in millimeters 

•Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests) shall not be less than L₂ (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1)