Dimensions Threaded Tees & Crosses - ASME B16.11
Threaded Tee and Cross

Dimensions - NPS 1/2 to 4 - Class 2000

NPS Min Length
of Thread
Outside Dia
of Band
D
Center
to End
A
Min
WT
B J
1/2 10.9 13.6 33 28 3.18
3/4 12.7 13.9 38 33 3.18
1 14.7 17.3 46 38 3.68
17 18 56 44 3.89
17.8 18.4 62 51 4.01
2 19 19.2 75 60 4.27
23.6 28.9 92 76 5.61
3 25.9 30.5 109 86 5.99
4 27.7 33 146 106 6.55
NPS B J Outside Dia
of Band
D
Center
to End
A
Min
WT
Min Length
of Thread
Threaded Tee and Cross

Dimensions - NPS 1/2 to 4 - Class 3000

NPS Min Length
of Thread
Outside Dia
of Band
D
Center
to End
A
Min
WT
B J
1/2 10.9 13.6 38 33 4.09
3/4 12.7 13.9 46 38 4.32
1 14.7 17.3 56 44 4.98
17 18 62 51 5.28
17.8 18.4 75 60 5.56
2 19 19.2 84 64 7.14
23.6 28.9 102 83 7.65
3 25.9 30.5 121 95 8.84
4 27.7 33 152 114 11.18
NPS B J Outside Dia
of Band
D
Center
to End
A
Min
WT
Min Length
of Thread
Threaded Tee and Cross

Dimensions - NPS 1/2 to 4 - Class 6000

NPS Min Length
of Thread
Outside Dia
of Band
D
Center
to End
A
Min
WT
B J
1/2 10.9 13.6 46 38 8.15
3/4 12.7 13.9 56 44 8.53
1 14.7 17.3 62 51 9.93
17 18 75 60 10.59
17.8 18.4 84 64 11.07
2 19 19.2 102 83 12.09
23.6 28.9 121 95 15.29
3 25.9 30.5 146 106 16.64
4 27.7 33 152 114 18.67
NPS B J Outside Dia
of Band
D
Center
to End
A
Min
WT
Min Length
of Thread
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.

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