•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 beless than L2 (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1).
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.
