SERIES A, CLASS 150 | ||||||||||||||||||
Flange Size, NPS | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 |
C, Min. Flange thickness | 2.69 | 2.81 | 2.94 | 3.18 | 3.25 | 3.56 | 3.44 | 3.56 | 3.81 | 4 | 4.06 | 4.25 | 4.38 | 4.56 | 4.75 | 4.88 | 5.06 | 5.19 |
t, plus tolerance for flange thickness | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 |
d, heavy nut thickness | 1.25 | 1.25 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 |
G, gasket final thickness | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 |
F, total height of facings or depth of RTJ groove | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 |
a, zero, except where the small female face is on the end of pipe, .19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Lcsb, calculated stud bolt effective thread length excluding end points | 8.505 | 8.745 | 9.005 | 9.985 | 10.13 | 10.75 | 10.51 | 10.75 | 11.25 | 11.63 | 11.75 | 12.13 | 12.89 | 13.25 | 13.63 | 13.89 | 14.25 | 14.51 |
Quantity of studs | 24 | 28 | 28 | 28 | 32 | 32 | 32 | 36 | 36 | 40 | 40 | 44 | 44 | 44 | 44 | 48 | 48 | 52 |
Stud size | 1.25 | 1.25 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 |
end points | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
End to end length | 8.755 | 8.995 | 9.255 | 10.24 | 10.38 | 11 | 10.76 | 11 | 11.5 | 11.88 | 12 | 12.38 | 13.14 | 13.5 | 13.88 | 14.14 | 14.5 | 14.76 |
End to end length to nearest 1/8" | 8 7/8 | 9 | 9 3/8 | 10 1/4 | 10 1/2 | 11 | 10 7/8 | 11 | 11 1/2 | 12 | 12 | 12 1/2 | 13 1/4 | 13 1/2 | 14 | 14 1/2 | 14 1/2 | 14 7/8 |
Notes: | ||||||||||||||||||
It is recommended to round up the stud length to the closest 1/8" fraction (Ex.: 9-3/8, 10-3/4, etc..) | ||||||||||||||||||
Add at least one stud diameter to above stud length if hydraulic tensioner is used | ||||||||||||||||||
Above lengths are calculated based on raised face weld neck flanges. Blind flanges or RTJ flanges may need longer studs |
SERIES A, CLASS 300 | ||||||||||||||||||
Flange, NPS | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 |
C, Min. Flange thickness | 3.13 | 3.38 | 3.63 | 3.88 | 4 | 4.13 | 4.25 | 4.5 | 4.69 | 4.88 | 5.06 | 5.25 | 5.5 | 5.69 | 6 | 6.06 | 6.25 | 6.44 |
t, plus tolerance for flange thickness | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 |
d, heavy nut thickness | 1.625 | 1.625 | 1.75 | 1.875 | 1.875 | 2 | 1.5 | 1.625 | 1.625 | 1.75 | 1.875 | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.25 | 2.25 |
G, gasket final thickness | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 |
F, total height of facings or depth of RTJ groove | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 |
a, zero, except where the small female face is on the end of pipe, .19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Lcsb, calculated stud bolt effective thread length exluding end points | 10.14 | 10.64 | 11.39 | 12.14 | 12.38 | 12.89 | 12.13 | 12.88 | 13.26 | 13.89 | 14.5 | 14.88 | 15.63 | 16.01 | 17.13 | 17.25 | 17.63 | 18.01 |
Quantity of studs | 28 | 28 | 28 | 28 | 28 | 32 | 32 | 32 | 32 | 32 | 28 | 32 | 32 | 32 | 28 | 28 | 32 | 32 |
Stud size | 1.625 | 1.625 | 1.75 | 1.875 | 1.875 | 2 | 1.5 | 1.625 | 1.625 | 1.75 | 1.875 | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.25 | 2.25 |
end points | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
End to end length | 10.39 | 10.89 | 11.64 | 12.39 | 12.63 | 13.14 | 12.38 | 13.13 | 13.51 | 14.14 | 14.75 | 15.13 | 15.88 | 16.26 | 17.38 | 17.5 | 17.88 | 18.26 |
End to end length to nearest 1/8" | 10 1/2 | 11 | 11 3/4 | 12 1/2 | 12 3/4 | 13 1/4 | 12 1/2 | 13 1/4 | 13 5/8 | 14 1/4 | 14 3/4 | 15 1/4 | 16 | 16 3/8 | 17 1/2 | 17 1/2 | 18 | 18 3/8 |
Notes: | ||||||||||||||||||
It is recommended to round up the stud length to the closest 1/8" fraction (Ex.: 9-3/8, 10-3/4, etc..) | ||||||||||||||||||
Add at least one stud diameter to above stud length if hydraulic tensioner is used | ||||||||||||||||||
Above lengths are calculated based on raised face weld neck flanges. Blind flanges or RTJ flanges may need longer studs |
SERIES A, CLASS 400 | ||||||||||||||||||
Flange, NPS* | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 |
C, Min. Flange thickness | 3.5 | 3.75 | 4 | 4.25 | 4.38 | 4.5 | 4.88 | 5.13 | 5.25 | 5.5 | 5.75 | 6 | 6.19 | 6.38 | 6.69 | 6.88 | 7 | 7.31 |
t, plus tolerance for flange thickness | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 |
d, heavy nut thickness | 1.75 | 1.875 | 2 | 2 | 2 | 2 | 1.75 | 1.875 | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.25 | 2.5 | 2.5 | 2.5 | 2.75 |
G, gasket final thickness | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 |
F, total height of facings or depth of RTJ groove | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
a, zero, except where the small female face is on the end of pipe, .19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Lcsb, calculated stud bolt effective thread length exluding end points | 11.51 | 12.26 | 13.01 | 13.51 | 13.77 | 14.01 | 14.27 | 15.02 | 15.26 | 16.01 | 16.51 | 17.51 | 17.89 | 18.27 | 19.39 | 19.77 | 20.01 | 21.13 |
Quantity of studs | 28 | 28 | 28 | 28 | 28 | 32 | 32 | 32 | 32 | 32 | 36 | 28 | 32 | 32 | 28 | 32 | 32 | 32 |
Stud size | 1.75 | 1.875 | 2 | 2 | 2 | 2 | 1.75 | 1.875 | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.25 | 2.5 | 2.5 | 2.5 | 2.75 |
end points | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
End to end length | 11.76 | 12.51 | 13.26 | 13.76 | 14.02 | 14.26 | 14.52 | 15.27 | 15.51 | 16.26 | 16.76 | 17.76 | 18.14 | 18.52 | 19.64 | 20.02 | 20.26 | 21.38 |
End to end length to nearest 1/8" | 11 7/8 | 12 5/8 | 13 3/8 | 13 7/8 | 14 1/8 | 14 3/8 | 14 5/8 | 15 3/8 | 15 5/8 | 16 3/8 | 16 7/8 | 17 7/8 | 18 1/4 | 18 5/8 | 19 7/8 | 20 1/8 | 20 3/8 | 21 1/2 |
* Sizes 38" and above are identical for both Series A, and B | ||||||||||||||||||
Notes: | ||||||||||||||||||
It is recommended to round up the stud length to the closest 1/8" fraction (Ex.: 9-3/8, 10-3/4, etc..) | ||||||||||||||||||
Add at least one stud diameter to above stud length if hydraulic tensioner is used | ||||||||||||||||||
Above lengths are calculated based on raised face weld neck flanges. Blind flanges or RTJ flanges may need longer studs |
SERIES A, CLASS 600 | ||||||||||||||||||
Flange, NPS* | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 |
C, Min. Flange thickness | 4.25 | 4.38 | 4.5 | 4.63 | 4.75 | 4.88 | 6 | 6.25 | 6.63 | 6.81 | 7.06 | 7.44 | 7.75 | 8 | 8.25 | 8.56 | 8.75 | 9.19 |
t, plus tolerance for flange thickness | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 |
d, heavy nut thickness | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.5 | 2.25 | 2.25 | 2.5 | 2.5 | 2.5 | 2.75 | 3 | 3 | 3 | 3.25 | 3.25 | 3.5 |
G, gasket final thickness | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 |
F, total height of facings or depth of RTJ groove | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
a, zero, except where the small female face is on the end of pipe, .19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Lcsb, calculated stud bolt effective thread length exluding end points | 13.26 | 13.77 | 14.01 | 14.77 | 15.01 | 15.77 | 17.51 | 18.01 | 19.27 | 19.63 | 20.13 | 21.39 | 22.51 | 23.01 | 23.51 | 24.63 | 25.01 | 26.39 |
Quantity of studs | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 32 | 28 | 32 | 32 | 32 | 28 | 32 | 32 | 32 | 32 | 28 |
Stud size | 1.875 | 2 | 2 | 2.25 | 2.25 | 2.5 | 2.25 | 2.25 | 2.5 | 2.5 | 2.5 | 2.75 | 3 | 3 | 3 | 3.25 | 3.25 | 3.5 |
end points | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
End to end length | 13.51 | 14.02 | 14.26 | 15.02 | 15.26 | 16.02 | 17.76 | 18.26 | 19.52 | 19.88 | 20.38 | 21.64 | 22.76 | 23.26 | 23.76 | 24.88 | 25.26 | 26.64 |
End to end length to nearest 1/8" | 13 5/8 | 14 1/8 | 14 3/8 | 15 1/8 | 15 3/8 | 16 1/8 | 17 7/8 | 18 3/8 | 19 5/8 | 20 | 20 1/2 | 21 7/8 | 22 7/8 | 23.26 | 23.76 | 24.88 | 25.26 | 26.64 |
* Sizes 38" and above are identical for both Series A, and B | ||||||||||||||||||
Notes: | ||||||||||||||||||
It is recommended to round up the stud length to the closest 1/8" fraction (Ex.: 9-3/8, 10-3/4, etc..) | ||||||||||||||||||
Add at least one stud diameter to above stud length if hydraulic tensioner is used | ||||||||||||||||||
Above lengths are calculated based on raised face weld neck flanges. Blind flanges or RTJ flanges may need longer studs |
SERIES A, CLASS 900 | ||||||||||||
Flange, NPS* | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 |
C, Min. Flange thickness | 5.5 | 5.63 | 5.88 | 6.25 | 6.5 | 6.75 | 7.5 | 7.75 | 8.13 | 8.44 | 8.88 | 9.19 |
t, plus tolerance for flange thickness | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 | 0.19 |
d, heavy nut thickness | 2.75 | 3 | 3 | 3.25 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.75 | 4 | 4 |
G, gasket final thickness | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 | 0.125 |
F, total height of facings or depth of RTJ groove | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
a, zero, except where the small female face is on the end of pipe, .19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Lcsb, calculated stud bolt effective thread length exluding end points | 17.51 | 18.27 | 18.77 | 20.01 | 21.01 | 21.51 | 23.01 | 23.51 | 24.27 | 25.39 | 26.77 | 27.39 |
Quantity of studs | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 24 | 24 | 24 | 24 | 24 |
Stud size | 2.75 | 3 | 3 | 3.25 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.75 | 4 | 4 |
end points | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
End to end length | 17.76 | 18.52 | 19.02 | 20.26 | 21.26 | 21.76 | 23.26 | 23.76 | 24.52 | 25.64 | 27.02 | 27.64 |
End to end length to nearest 1/8" | 17 7/8 | 18 5/8 | 19 1/8 | 20 3/8 | 21 3/8 | 21 7/8 | 23 3/8 | 23 7/8 | 24 5/8 | 25 7/8 | 27 1/8 | 27 3/4 |
* Sizes 38" and above are identical for both Series A, and B | ||||||||||||
Notes: | ||||||||||||
It is recommended to round up the stud length to the closest 1/8" fraction (Ex.: 9-3/8, 10-3/4, etc..) | ||||||||||||
Add at least one stud diameter to above stud length if hydraulic tensioner is used | ||||||||||||
Above lengths are calculated based on raised face weld neck flanges. Blind flanges or RTJ flanges may need longer studs |