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ASME B16.5-2009

Table 7 Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings

Flange

Stud Bolt With Nuts

Machine Bolt With Nuts

O

W

L

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

[Notes (1), (4)]

Drilling [Notes (2), (3)] Stud Bolts MachineOutside[Note (1)] BoltsNominal Diameter Diameter Diameter

Pipe of of Bolt of Bolt Number Diameter 2-mm 2-mmSize, Flange, Circle, Holes, of of Bolts, Raised Ring RaisedNPS O W in. Bolts in. Face Joint Face

1 ⁄ 2 90 60.3 5 ⁄ 8 4 1 ⁄ 2 55 . . . 503 ⁄ 4 100 69.9 5 ⁄ 8 4 1 ⁄ 2 65 . . . 501 110 79.4 5 ⁄ 8 4 1 ⁄ 2 65 75 55

11 ⁄ 4 115 88.9 5 ⁄ 8 4 1 ⁄ 2 70 85 5511 ⁄ 2 125 98.4 5 ⁄ 8 4 1 ⁄ 2 70 85 65

2 150 120.7 3 ⁄ 4 4 5 ⁄ 8 85 95 7021 ⁄ 2 180 139.7 3 ⁄ 4 4 5 ⁄ 8 90 100 753 190 152.4 3 ⁄ 4 4 5 ⁄ 8 90 100 75

31 ⁄ 2 215 177.8 3 ⁄ 4 8 5 ⁄ 8 90 100 754 230 190.5 3 ⁄ 4 8 5 ⁄ 8 90 100 75

5 255 215.9 7 ⁄ 8 8 3 ⁄ 4 95 110 856 280 241.3 7 ⁄ 8 8 3 ⁄ 4 100 115 858 345 298.5 7 ⁄ 8 8 3 ⁄ 4 110 120 90

10 405 362.0 1 12 7 ⁄ 8 115 125 10012 485 431.8 1 12 7 ⁄ 8 120 135 100

14 535 476.3 1 1 ⁄ 8 12 1 135 145 11516 595 539.8 1 1 ⁄ 8 16 1 135 145 11518 635 577.9 1 1 ⁄ 4 16 1 1 ⁄ 8 145 160 12520 700 635.0 1 1 ⁄ 4 20 1 1 ⁄ 8 160 170 14024 815 749.3 1 3 ⁄ 8 20 1 1 ⁄ 4 170 185 150

GENERAL NOTES:(a) Dimensions of Table 7 are in millimeters, except for diameters of bolts and bolt holes, which are in inch units. For dimensions in inch

units, refer to Mandatory Appendix II, Table II-7.(b) For other dimensions, see Tables 8 and 9.NOTES:(1) The length of the stud bolt does not include the height of the points (see para. 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para. 6.6.(4) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 10 Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings

Flange

Stud Bolt With Nuts

Machine Bolt With Nuts

O

W

L

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]

Stud Bolts MachineOutside[Note (1)] BoltsNominal Diameter Diameter Diameter

Pipe of of Bolt of Bolt Number Diameter 2-mm 2-mmSize, Flange, Circle, Holes, of of Bolts, Raised Ring RaisedNPS O W in. Bolts in. Face Joint Face

1 ⁄ 2 95 66.7 5 ⁄ 8 4 1 ⁄ 2 65 75 553 ⁄ 4 115 82.6 3 ⁄ 4 4 5 ⁄ 8 75 90 651 125 88.9 3 ⁄ 4 4 5 ⁄ 8 75 90 65

11 ⁄ 4 135 98.4 3 ⁄ 4 4 5 ⁄ 8 85 95 7011 ⁄ 2 155 114.3 7 ⁄ 8 4 3 ⁄ 4 90 100 75

2 165 127.0 3 ⁄ 4 8 5 ⁄ 8 90 100 75

21 ⁄ 2 190 149.2

7 ⁄ 8 8

3 ⁄ 4 100 115 853 210 168.3 7 ⁄ 8 8 3 ⁄ 4 110 120 90

31 ⁄ 2 230 184.2 7 ⁄ 8 8 3 ⁄ 4 110 125 954 255 200.0 7 ⁄ 8 8 3 ⁄ 4 115 125 95

5 280 235.0 7 ⁄ 8 8 3 ⁄ 4 120 135 1106 320 269.9 7 ⁄ 8 12 3 ⁄ 4 120 140 1108 380 330.2 1 12 7 ⁄ 8 140 150 120

10 445 387.4 1 1 ⁄ 8 16 1 160 170 14012 520 450.8 1 1 ⁄ 4 16 1 1 ⁄ 8 170 185 145

14 585 514.4 1 1 ⁄ 4 20 1 1 ⁄ 8 180 190 16016 650 571.5 1 3 ⁄ 8 20 1 1 ⁄ 4 190 205 16518 710 628.6 1 3 ⁄ 8 24 1 1 ⁄ 4 195 210 17020 775 685.8 1 3 ⁄ 8 24 1 1 ⁄ 4 205 220 18524 915 812.8 1 5 ⁄ 8 24 1 1 ⁄ 2 230 255 205

GENERAL NOTES:(a) Dimensions of Table 10 are in millimeters, except for diameters of bolts and bolt holes, which are in inch units. For dimensions in inch

units, refer to Mandatory Appendix II, Table II-10.(b) For other dimensions, see Tables 11 and 12.NOTES:(1) Length of stud bolt does not include the height of the points (see para. 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para 6.6.(4) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 13 Templates for Drilling Class 400 Pipe Flanges

Flange Stud Bolt With Nuts

O L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]

Nominal Outside Diameter Diameter Male andPipe Diameter of Bolt of Bolt Number Diameter 7-mm Female/Size, of Flange, Circle, Holes, of of Bolts, Raised Tongue Ring NPS O W in. Bolts in. Face and Groove Joint

1 ⁄ 23 ⁄ 41

11 ⁄ 411 ⁄ 2 Use Class 600 dimensions in these sizes

221 ⁄ 23

31 ⁄ 2

4 255 200.0 1 8 7 ⁄ 8

140 135 1405 280 235.0 1 8 7 ⁄ 8 145 135 1456 320 269.9 1 12 7 ⁄ 8 150 145 1508 380 330.0 1 1 ⁄ 8 12 1 170 165 170

10 445 387.4 1 1 ⁄ 4 16 1 1 ⁄ 8 190 185 19012 520 450.8 1 3 ⁄ 8 16 1 1 ⁄ 4 205 195 205

14 585 514.4 1 3 ⁄ 8 20 1 1 ⁄ 4 210 205 21016 650 571.5 1 1 ⁄ 2 20 1 3 ⁄ 8 220 215 22018 710 628.6 1 1 ⁄ 2 24 1 3 ⁄ 8 230 220 23020 775 685.8 1 5 ⁄ 8 24 1 1 ⁄ 2 240 235 25024 915 812.8 1 7 ⁄ 8 24 1 3 ⁄ 4 265 260 280

GENERAL NOTES:(a) Dimensions of Table 13 are in millimeters, except for the diameter of bolts and bolt holes, which are in inch units. For dimensions in

inch units, refer to Mandatory Appendix II, Table II-13.

(b) For other dimensions, see Table 14.NOTES:(1) The length of the stud bolt does not include the height of the points. See para. 6.10.2.(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para. 6.6.(4) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 15 Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings

Flange Stud Bolt With Nuts

O

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]

Nominal Outside Diameter Diameter Male andPipe Diameter of Bolt of Bolt Number Diameter 7-mm Female/Size, of Flange, Circle, Holes, of of Bolts, Raised Tongue Ring NPS O W in. Bolts in. Face and Groove Joint

1 ⁄ 2 95 66.7 5 ⁄ 8 4 1 ⁄ 2 75 70 753 ⁄ 4 115 82.6 3 ⁄ 4 4 5 ⁄ 8 90 85 901 125 88.9 3 ⁄ 4 4 5 ⁄ 8 90 85 90

11 ⁄ 4 135 98.4 3 ⁄ 4 4 5 ⁄ 8 95 90 9511 ⁄ 2 155 114.3 7 ⁄ 8 4 3 ⁄ 4 110 100 110

2 165 127.0 3 ⁄ 4 8 5 ⁄ 8 110 100 11021 ⁄ 2 190 149.2 7 ⁄ 8 8 3 ⁄ 4 120 115 1203 210 168.3 7 ⁄ 8 8 3 ⁄ 4 125 120 125

31 ⁄ 2 230 184.2 1 8 7 ⁄ 8 140 135 1404 275 215.9 1 8 7 ⁄ 8 145 140 145

5 330 266.7 1 1 ⁄ 8 8 1 165 160 1656 355 292.1 1 1 ⁄ 8 12 1 170 165 1708 420 349.2 1 1 ⁄ 4 12 1 1 ⁄ 8 190 185 195

10 510 431.8 1 3 ⁄ 8 16 1 1 ⁄ 4 215 210 21512 560 489.0 1 3 ⁄ 8 20 1 1 ⁄ 4 220 215 220

14 605 527.0 1 1 ⁄ 2 20 1 3 ⁄ 8 235 230 23516 685 603.2 1 5 ⁄ 8 20 1 1 ⁄ 2 255 250 25518 745 654.0 1 3 ⁄ 4 20 1 5 ⁄ 8 275 265 27520 815 723.9 1 3 ⁄ 4 24 1 5 ⁄ 8 285 280 29024 940 838.2 2 24 1 7 ⁄ 8 330 325 335

GENERAL NOTES:(a) Dimensions of Table 15 are in millimeters, except for the diameters of the bolts and bolt holes, which are expressed in inch units. For

dimensions in inch units, refer to Mandatory Appendix II, Table II-15.

(b) For other dimensions, see Table 16.NOTES:(1) The length of the stud bolt does not include the height of the points (see para 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para 6.6.(4) Bolt lengths not shown in the table may be in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 17 Templates for Drilling Class 900 Pipe Flanges and Flanged Fittings

Flange Stud Bolt With Nuts

O

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]Nominal OutsidePipe Diameter Diameter of Diameter of Size, of Flange, Bolt Circle, Bolt Holes, Number of Diameter of 7-mm Male and Female/NPS O W in. Bolts Bolts, in. Raised Face Tongue and Groove Ring Joint

1 ⁄ 23 ⁄ 41

Use Class 1500 dimensions in these sizes11 ⁄ 411 ⁄ 22

21 ⁄ 2

3 240 190.5 1 8 7 ⁄ 8 145 140 1454 290 235.0 1 1 ⁄ 4 8 11 ⁄ 8 170 165 1705 350 279.4 1 3 ⁄ 8 8 11 ⁄ 4 190 185 1906 380 317.5 1 1 ⁄ 4 12 1 1 ⁄ 8 190 185 195

8 470 393.7 1 1 ⁄ 2 12 1 3 ⁄ 8 220 215 22010 545 469.9 1 1 ⁄ 2 16 1 3 ⁄ 8 235 230 23512 610 533.4 1 1 ⁄ 2 20 1 3 ⁄ 8 255 250 25514 640 558.8 1 5 ⁄ 8 20 1 1 ⁄ 2 275 265 280

16 705 616.0 1 3 ⁄ 4 20 1 5 ⁄ 8 285 280 29018 785 685.8 2 20 1 7 ⁄ 8 325 320 33520 855 749.3 2 1 ⁄ 8 20 2 350 345 36024 1,040 901.7 2 5 ⁄ 8 20 2 1 ⁄ 2 440 430 455

GENERAL NOTES:(a) Dimensions of Table 17 are in millimeters, except for diameters of bolts and bolt holes, which are in inch units. For dimensions in inch

units, refer to Mandatory Appendix II, Table II-17.(b) For other dimensions, see Tables 18 and 19.NOTES:(1) The length of the stud bolt does not include the height of the points (see para 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para. 6.6.(4) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 19 Templates for Drilling Class 1500 Pipe Flanges

Flange Stud Bolt With Nuts

O

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]OutsideNominal Diameter Diameter of Diameter of Diameter of

Pipe Size, of Flange, Bolt Circle, Bolt Holes, Number of Bolts, 7-mm Male and Female/NPS O W in. Bolts in. Raised Face Tongue and Groove Ring Joint

1 ⁄ 2 120 82.6 7 ⁄ 8 4 3 ⁄ 4 110 100 1103 ⁄ 4 130 88.9 7 ⁄ 8 4 3 ⁄ 4 115 110 1151 150 101.6 1 4 7 ⁄ 8 125 120 125

11 ⁄ 4 160 111.1 1 4 7 ⁄ 8 125 120 125

11 ⁄ 2 180 123.8 1 1 ⁄ 8 4 1 140 135 1402 215 165.1 1 8 7 ⁄ 8 145 140 145

21 ⁄ 2 245 190.5 1 1 ⁄ 8 8 1 160 150 1603 265 203.2 1 1 ⁄ 4 8 11 ⁄ 8 180 170 1804 310 241.3 1 3 ⁄ 8 8 11 ⁄ 4 195 190 195

5 375 292.1 1 5 ⁄ 8 8 11 ⁄ 2 250 240 2506 395 317.5 1 1 ⁄ 2 12 13 ⁄ 8 260 255 2658 485 393.7 1 3 ⁄ 4 12 15 ⁄ 8 290 285 300

10 585 482.6 2 12 1 7 ⁄ 8 335 330 34512 675 571.5 2 1 ⁄ 8 16 2 375 370 385

14 750 635.0 2 3 ⁄ 8 16 21 ⁄ 4 405 400 42516 825 704.8 2 5 ⁄ 8 16 21 ⁄ 2 445 440 47018 915 774.7 2 7 ⁄ 8 16 23 ⁄ 4 495 490 52520 985 831.8 3 1 ⁄ 8 16 3 540 535 56524 1 170 990.6 3 5 ⁄ 8 16 31 ⁄ 2 615 610 650

GENERAL NOTES:(a) Dimensions of Table 19 are in millimeters, except for the diameters of the bolts and bolt holes, which are in inch units. For dimensions

in inch units, refer to Mandatory Appendix II, Table II-19.(b) For other dimensions, see Table 20.

NOTES:(1) The length of the stud bolt does not include the height of the points (see para. 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para. 6.6.(4) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix C (see para. 6.10.2).

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ASME B16.5-2009

Table 21 Templates for Drilling Class 2500 Pipe Flanges

Flange Stud Bolt With Nuts

O

L

Point height [Note (1)]

1 2 3 4 5 6 7 8 9

Length of Bolts,L

Drilling [Notes (2), (3)] [Notes (1), (4)]OutsideNominal Diameter Diameter of Diameter of Diameter 7-mm

Pipe Size, of Flange, Bolt Circle, Bolt Holes, Number of of Bolts, Raised Male and Female/NPS O W in. Bolts in. Face Tongue and Groove Ring Joint

1 ⁄ 2 135 88.9 7 ⁄ 8 4 3 ⁄ 4 120 115 1203 ⁄ 4 140 95.2 7 ⁄ 8 4 3 ⁄ 4 125 120 1251 160 108.0 1 4 7 ⁄ 8 140 135 140

11 ⁄ 4 185 130.2 1 1 ⁄ 8 4 1 150 145 15011 ⁄ 2 205 146.0 1 1 ⁄ 4 4 11 ⁄ 8 170 165 170

2 235 171.4 1 1 ⁄ 8 8 1 180 170 18021 ⁄ 2 265 196.8 1 1 ⁄ 4 8 11 ⁄ 8 195 190 205

3 305 228.6 13

⁄ 8 8 11

⁄ 4 220 215 2304 355 273.0 1 5 ⁄ 8 8 11 ⁄ 2 255 250 260

5 420 323.8 1 7 ⁄ 8 8 13 ⁄ 4 300 290 3106 485 368.3 2 1 ⁄ 8 8 2 345 335 3558 550 438.2 2 1 ⁄ 8 12 2 380 375 395

10 675 539.8 2 5 ⁄ 8 12 2 1 ⁄ 2 490 485 51012 760 619.1 2 7 ⁄ 8 12 2 3 ⁄ 4 540 535 560

GENERAL NOTES:(a) Dimensions of Table 21 are in millimeters, except for the diameters of the bolts and bolt holes, which are in inch units. For dimensions

in inch units, refer to Mandatory Appendix II, Table II-21.(b) For other dimensions, see Table 22.NOTES:(1) The length of the stud bolt does not include the height of the points (see para. 6.10.2).(2) For flange bolt holes, see para. 6.5.(3) For spot facing, see para. 6.6.(4) Bolt lengths not shown in the table may be determined with Nonmandatory Appendix C (see para. 6.10.2).

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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 5.19t, 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 0.19d, 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 1.75G, 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 .125F, 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 0.06a, 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 0Lcsb, 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 14.51Quantity of studs 24 28 28 28 32 32 32 36 36 40 40 44 44 44 44 48 48 52Stud 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 1.75end 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 0.25End 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

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

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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 6.44t, 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 0.19d, 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 2.25G, 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 .125F, total height of facings or dept h 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 0.06a, 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 0Lcsb, 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. 01Quantity of studs 28 28 28 28 28 32 32 32 32 32 28 32 32 32 28 28 32 32Stud 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 .25end 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 0.25End 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

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

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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 7.31t, 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 0.19d, 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 2.75G, 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 .125F, 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 0.25a, 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 0Lcsb, 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 21.13Quantity of studs 28 28 28 28 28 32 32 32 32 32 36 28 32 32 28 32 32 32Stud 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 2.75end 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 0.25End 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

* 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

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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 9.19t, 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 0.19d, 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 3.5G, 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 .125F, 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 0.25a, 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 0Lcsb, calculated stud bolt effective t hread 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 26.39Quantity of studs 28 28 28 28 28 28 28 32 28 32 32 32 28 32 32 32 32 28Stud 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 3.5end 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 0.25End 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

* 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

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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 9.19t, 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 0.19d, heavy nut thickness 2.75 3 3 3.25 3.5 3.5 3.5 3.5 3.5 3.75 4 4G, 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 0.125F, 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 0.25a, 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 0Lcsb, 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 24Stud size 2.75 3 3 3.25 3.5 3.5 3.5 3.5 3.5 3.75 4 4end points 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25End 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

* 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

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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 5.19t, 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 0.19d, 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 1.75G, 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 .125F, 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 0.06a, 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 0Lcsb, 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 14.51Quantity of studs 24 28 28 28 32 32 32 36 36 40 40 44 44 44 44 48 48 52Stud 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 1.75end 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 0.25End 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

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

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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 6.44t, 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 0.19d, 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 2.25G, 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 .125F, total height of facings or dept h 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 0.06a, 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 0Lcsb, 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. 01Quantity of studs 28 28 28 28 28 32 32 32 32 32 28 32 32 32 28 28 32 32Stud 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 .25end 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 0.25End 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

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

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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 7.31t, 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 0.19d, 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 2.75G, 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 .125F, 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 0.25a, 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 0Lcsb, 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 21.13Quantity of studs 28 28 28 28 28 32 32 32 32 32 36 28 32 32 28 32 32 32Stud 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 2.75end 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 0.25End 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

* 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

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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 9.19t, 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 0.19d, 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 3.5G, 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 .125F, 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 0.25a, 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 0Lcsb, calculated stud bolt effective t hread 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 26.39Quantity of studs 28 28 28 28 28 28 28 32 28 32 32 32 28 32 32 32 32 28Stud 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 3.5end 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 0.25End 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

* 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

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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 9.19t, 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 0.19d, heavy nut thickness 2.75 3 3 3.25 3.5 3.5 3.5 3.5 3.5 3.75 4 4G, 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 0.125F, 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 0.25a, 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 0Lcsb, 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 24Stud size 2.75 3 3 3.25 3.5 3.5 3.5 3.5 3.5 3.75 4 4end points 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25End 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

* 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

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SERIES B, CLASS 150

Flange, NPS 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60

C, Min. Flange thickness 1.63 1.75 1.75 1.81 1.94 2.06 2.13 2.19 2.31 2.38 2.44 2.56 2.69 2.75 2.81 2.88 2.94 3t, 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 0.19d, heavy nut thickness 0.75 0.75 0.75 0.75 0.875 0.875 1 1 1 1 1.125 1.125 1.125 1.125 1.125 1.125 1.25 1.25G, 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 .125F, 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 0.06a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 5 .385 5.625 5 .625 5 .745 6 .255 6 .495 6 .885 7 .005 7 .245 7 .385 7 .755 7 .995 8 .255 8 .375 8.495 8 .635 9 .005 9 .125Quantity of studs 36 40 44 48 40 44 40 44 48 52 40 44 48 52 56 60 48 52Stud size 0 .75 0 .75 0 .75 0 .75 0 .875 0 .875 1 1 1 1 1.125 1.125 1 .125 1 .125 1 .125 1 .125 1 .25 1 .25end 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 0.25End to end length 5.635 5.875 5.875 5.995 6.505 6.745 7.135 7.255 7.495 7.635 8.005 8.245 8.505 8.625 8.745 8.885 9.255 9.375

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

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SERIES B, CLASS 150

Flange, NPS 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60

C, Min. Flange thickness 1.63 1.75 1.75 1.81 1.94 2.06 2.13 2.19 2.31 2.38 2.44 2.56 2.69 2.75 2.81 2.88 2.94 3t, 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 0.19d, heavy nut thickness 0.75 0.75 0.75 0.75 0.875 0.875 1 1 1 1 1.125 1.125 1.125 1.125 1.125 1.125 1.25 1.25G, 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 .125F, 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 0.06a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 5 .385 5.625 5 .625 5 .745 6 .255 6 .495 6 .885 7 .005 7 .245 7 .385 7 .755 7 .995 8 .255 8 .375 8.495 8 .635 9 .005 9 .125Quantity of studs 36 40 44 48 40 44 40 44 48 52 40 44 48 52 56 60 48 52Stud size 0 .75 0 .75 0 .75 0 .75 0 .875 0 .875 1 1 1 1 1.125 1.125 1 .125 1 .125 1 .125 1 .125 1 .25 1 .25end 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 0.25End to end length 5.635 5.875 5.875 5.995 6.505 6.745 7.135 7.255 7.495 7.635 8.005 8.245 8.505 8.625 8.745 8.885 9.255 9.375

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

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SERIES B, 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 3.5 3.5 3.69 4.06 4.06 4.06 4.38 4.56 4.69 5 5.06 5.06 5.44 5.63 5.38 6.06 6.06 5.94t, 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 0.19d, heavy nut thickness 1.25 1.25 1.375 1.5 1.5 1.625 1.625 1.625 1.75 1.75 1.875 1.875 1.875 1.875 1.875 2.25 2.25 2.25G, 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 .125F, 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 0.06a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 10.13 10.13 10.76 11.75 11.75 12 12.64 13 13.51 14.13 14.5 14.5 15.26 15.64 15.14 17.25 17.25 17.01Quantity of studs 32 36 36 32 36 32 36 40 36 40 36 40 44 48 48 36 40 40Stud size 1.25 1.25 1.375 1.5 1.5 1.625 1.625 1.625 1.75 1.75 1.875 1.875 1.875 1.875 1.875 2.25 2.25 2.25end 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 0.25End to end length 10.38 10.38 11.01 12 12 12.25 12.89 13.25 13.76 14.38 14.75 14.75 15.51 15.89 15.39 17.5 17.5 17.26

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

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SERIES B, 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 4.69 4.88 5.13 5.25 5.5 5.75 6 6.19 6.38 6.69 6.88 7 7.31t, 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 0.19d, heavy nut thickness 1.375 1.5 1.5 1.625 1.625 1.75 1.75 1.875 1.875 2 2 2.25 2.25 2.25 2.5 2.5 2.5 2.75G, 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 .125F, 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 0.25a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 10.76 11 .51 12.01 12.76 13.02 13.89 14.27 15.02 15.26 16.01 16.51 17.51 17.89 18.27 19 .39 19.77 20.01 21.13Quantity of studs 28 24 28 28 32 28 32 32 32 32 36 28 32 32 28 32 32 32Stud size 1.375 1. 5 1.5 1.625 1. 625 1. 75 1.75 1. 875 1.875 2 2 2.25 2. 25 2.25 2. 5 2.5 2 .5 2.75end 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 0.25End to end length 11.01 11.76 12.26 13.01 13.27 14.14 14.52 15.27 15.51 16.26 16.76 17.76 18.14 18.52 19.64 20.02 20.26 21.38

* 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

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SERIES B, 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 4.38 4.56 4.94 5.13 5.56 5.75 6 6.25 6.63 6.81 7.06 7.44 7.75 8 8.25 8.56 8.75 9.19t, 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 0.19d, heavy nut thickness 1.625 1.75 1.875 2 2.25 2.25 2.25 2.25 2.5 2.5 2.5 2.75 3 3 3 3.25 3.25 3.5G, 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 .125F, 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 0.25a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 13.02 13 .63 14.64 15.27 16.63 17.01 17.51 18.01 19.27 19.63 20.13 21.39 22.51 23.01 23 .51 24.63 25.01 26.39Quantity of studs 28 28 28 28 24 28 28 32 28 32 32 32 28 32 32 32 32 28Stud size 1.625 1.75 1.875 2 2.25 2.25 2.25 2.25 2.5 2.5 2.5 2.75 3 3 3 3.25 3.25 3.5end 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 0.25End to end length 13.27 13.88 14.89 15.52 16.88 17.26 17.76 18.26 19.52 19.88 20.38 21.64 22.76 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

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SERIES B, CLASS 900

Flange, NPS* 26 28 30 32 34 36 38 40 42 44 46 48

C, Min. Flange thickness 5.31 5.81 6.13 6.31 6.75 6.81 7.5 7.75 8.13 8.44 8.88 9.19t, 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 0.19d, heavy nut thickness 2.5 2.75 3 3 3.25 3 3.5 3.5 3.5 3.75 4 4G, 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 0.125F, 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 0.25a, 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 0Lcsb, calculated stud bolt effective thread length exluding end points 16.63 18.13 19.27 19.63 21.01 20.63 23.01 23.51 24.27 25.39 26.77 27.39

Quantity of studs 20 20 20 20 20 24 20 24 24 24 24 24Stud size 2.5 2.75 3 3 3.25 3 3.5 3.5 3.5 3.75 4 4end points 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25End to end length 16.88 18.38 19.52 19.88 21.26 20.88 23.26 23.76 24.52 25.64 27.02 27.64

* 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

8/18/2019 BoNace Mr 0175lting

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