Dimensions Threaded Full and Half Couplings ASME B16.11


Class 3000

NPS Length Outside Dia Min Thread Length
A D B J
1/2 48 28 10.9 13.6
3/4 51 35 12.7 13.9
1 60 44 14.7 17.3
1.1/4 67 57 17 18
1.1/2 79 64 17.8 18.4
2 86 76 19 19.2
2.1/2 92 92 23.6 28.9
3 108 108 25.9 30.5
4 121 140 27.7 33


Threaded Full and Half-Couplings


Class 6000

NPS Length Outside Dia Min Thread Length
A D B J
1/2 48 38 10.9 13.6
3/4 51 44 12.7 13.9
1 60 57 14.7 17.3
1.1/4 67 64 17 18
1.1/2 79 76 17.8 18.4
2 86 92 19 19.2
2.1/2 92 108 23.6 28.9
3 108 127 25.9 30.5
4 121 159 27.7 33


Threaded Full and Half-Couplings

General notes..

  • Dimensions are in millimeters unless otherwise indicated.
  • 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 J.




Explore the World of Piping


© Werner Sölken 2008 -  
All rights reserved.
www.wermac.org uses Google Analytics


I must be old. I still believe in respect.