ASME B16.5 Flanges

Class 300, Welding Neck, Slip-On and Threaded

Robert-James Sales, Inc. B16.47, Ser. A

ASME AS ME B1 B16. 6.5 5 Flang Flanges es Weld Neck, Slip-On, Socket Weld, Threaded, Lap Joint, Blind. 1/2" - 24" Class 150, 300, 400, 400, 600, 900, 1500 1500 and 2500 NOTE: Reducing flanges are available in all types and pressures. To order a reducing flange, state the smaller size first, then the 1 2" O.D. outside diameter of the larger size. Example: 1" X 7 ⁄ 150 SO SO RF reduc reducing ing would would be be a 3" X 1" Slip-on, Slip-on, Raised Raised Face Faced d Reducing. Or, to simplify, just state the actual pipe sizes in order of larger to smaller. Example: 3" X 1" Slip-on, Raised Faced, Reducing.

Class 150 ASME B16.5

Common Dimensions Nominal Size

/ 2 3 / 4 1

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

/ 4 1 / 2 1

/ 2 1

/ 2 1

Outside Dia. O

3.50 3.88 4.25 4.62 5.00 6.00 7.00 7.50 8.50 9.00 10.00 11.00 13.50 16.00 19.00 21.00 23.50 25.00 27.50 32.00

Bore

Thk. C

Raised Face Dia. R

Fillet Radius r

0.44 0.50 0.56 0.62 0.69 0.75 0.88 0.94 0.94 0.94 0.94 1.00 1.12 1.19 1.25 1.38 1.44 1.56 1.69 1.88

1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 5.50 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

0.12 0.12 0.12 0.19 0.25 0.31 0.31 0.38 0.38 0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50

Welding Neck Socket B1

. r e s a h c r u p y b d e i f i c e p s e b o T

Length Thru Hub

Slip-on B2

Lap Joint B3

Welding Neck Y1

0.88 1.09 1.36 1.70 1.95 2.44 2.94 3.57 4.07 4.60 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

0.90 1.11 1.38 1.72 1.97 2.46 2.97 3.60 4.10 4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

1.88 2.06 2.19 2.25 2.44 2.50 2.75 2.75 2.81 3.00 3.50 3.50 4.00 4.00 4.50 5.00 5.00 5.50 5.69 6.00

Slip-on Socket Y2

0.62 0.62 0.69 0.81 0.88 1.00 1.12 1.19 1.25 1.31 1.44 1.56 1.75 1.94 2.19 2.25 2.50 2.69 2.88 3.25

Lap Joint Y3

0.62 0.62 0.69 0.81 0.88 1.00 1.12 1.19 1.25 1.31 1.44 1.56 1.75 1.94 2.19 3.12 3.44 3.81 4.06 4.38


(1/2" TO 3" ONLY)

Drilling Min. Thread Length T

Depth of Socket D

Dia. Hub at Bevel A

Hub Dia. X

0.62 0.62 0.69 0.81 0.88 1.00 1.12 1.19 1.25 1.31 1.44 1.56 1.75 1.94 2.19 2.25 2.50 2.69 2.88 3.25

0.38 0.44 0.50 0.56 0.62 0.69 0.75 0.81 0.88 0.94 0.94 1.06 1.25 1.31 1.56 1.63 1.75 1.94 2.13 2.50

0.84 1.05 1.32 1.66 1.90 2.38 2.88 3.50 4.00 4.50 5.56 6.63 8.63 10.75 12.75 14.00 16.00 18.00 20.00 24.00

1.19 1.50 1.94 2.31 2.56 3.06 3.56 4.25 4.81 5.31 6.44 7.56 9.69 12.00 14.38 15.75 18.00 19.88 22.00 26.12

Bolt Circle

2.38 2.75 3.12 3.50 3.88 4.75 5.50 6.00 7.00 7.50 8.50 9.50 11.75 14.25 17.00 18.75 21.25 22.75 25.00 29.50

Dia. Holes

0.62 0.62 0.62 0.62 0.62 0.75 0.75 0.75 0.75 0.75 0.88 0.88 0.88 1.00 1.00 1.12 1.12 1.25 1.25 1.38

Approx. Weight No. Holes

Welding Neck

4 4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20

2 2 3 3 4 6 8 10 12 15 19 24 39 52 80 110 140 150 180 260

Slip-on Thrd. Sock. W.

1 2 2 3 3 5 7 8 11 13 15 19 30 43 64 90 98 130 165 220

Lap Joint

1 2 2 3 3 5 7 8 11 13 15 19 30 43 64 105 140 160 195 275

Blind

1 2 2 3 4 5 7 9 13 17 20 26 45 70 110 140 180 220 285 430

Nominal Size

1 2 / 3 4 /

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

1 4 / 1 2 /

1 2 /

1 2 /



/ 2 3 / 4 1

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

/ 4 1 / 2 1

/ 2 1

/ 2 1

Outside Dia. O

3.75 4.62 4.88 5.25 6.12 6.50 7.50 8.25 9.00 10.00 11.00 12.50 15.00 17.50 20.50 23.00 25.50 28.00 30.50 36.00

Bore

Thk. C

Raised Face Dia. R

Fillet Radius r

0.56 0.62 0.69 0.75 0.81 0.88 1.00 1.12 1.19 1.25 1.38 1.44 1.62 1.88 2.00 2.12 2.25 2.38 2.50 2.75

1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 5.50 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

0.12 0.12 0.12 0.19 0.25 0.31 0.31 0.38 0.38 0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50



Length Thru Hub

Slip-on B2

Lap Joint B3

Welding Neck Y1

Slip-on Socket Y2

Lap Joint Y3

0.88 1.09 1.36 1.70 1.95 2.44 2.94 3.57 4.07 4.57 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

0.90 1.11 1.38 1.72 1.97 2.46 2.97 3.60 4.10 4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

2.06 2.25 2.44 2.56 2.69 2.75 3.00 3.12 3.19 3.38 3.88 3.88 4.38 4.62 5.12 5.62 5.75 6.25 6.38 6.62

0.88 1.00 1.06 1.06 1.19 1.31 1.50 1.69 1.75 1.88 2.00 2.06 2.44 2.62 2.88 3.00 3.25 3.50 3.75 4.19

0.88 1.00 1.06 1.06 1.19 1.31 1.50 1.69 1.75 1.88 2.00 2.06 2.44 3.75 4.00 4.38 4.75 5.12 5.50 6.00


(1/2" TO 3" ONLY)


Dia. Counter Bore Thd. Q

0.62 0.62 0.69 0.81 0.88 1.12 1.25 1.25 1.44 1.44 1.69 1.81 2.00 2.19 2.38 2.50 2.69 2.75 2.88 3.25

0.93 1.14 1.41 1.75 1.98 2.50 3.00 3.63 4.13 4.63 5.69 6.75 8.75 10.88 12.94 14.19 16.19 18.19 20.19 24.19

Depth of Socket D

0.38 0.44 0.50 0.56 0.62 0.69 0.75 0.81 0.88 0.94 0.94 1.06 1.25 1.31 1.56 1.62 1.75 1.94 2.12 2.50

Dia. Hub at Bevel A

0.84 1.05 1.32 1.66 1.90 2.38 2.88 3.50 4.00 4.50 5.56 6.62 8.62 10.75 12.75 14.00 16.00 18.00 20.00 24.00

Hub Dia. X

1.50 1.88 2.12 2.50 2.75 3.31 3.94 4.62 5.25 5.75 7.00 8.12 10.25 12.62 14.75 16.75 19.00 21.00 23.12 27.62

Approx. Weight

Bolt Circle

Dia. Holes

No. Holes

Welding Neck


2.62 3.25 3.50 3.88 4.50 5.00 5.88 6.62 7.25 7.88 9.25 10.62 13.00 15.25 17.75 20.25 22.50 24.75 27.00 32.00

0.62 0.75 0.75 0.75 0.88 0.75 0.88 0.88 0.88 0.88 0.88 0.88 1.00 1.12 1.25 1.25 1.38 1.38 1.38 1.62

4 4 4 4 4 8 8 8 8 8 8 12 12 16 16 20 20 24 24 24

2 3 4 5 7 9 12 15 18 25 32 42 67 91 140 180 250 320 400 580

2 3 3 4 6 7 10 13 17 22 28 39 58 81 115 165 190 250 315 475

Lap Joint

2 3 3 4 6 7 10 13 17 22 28 39 58 91 140 190 250 295 370 550

Blind

2 3 3 4 6 8 12 16 21 27 35 50 81 124 185 250 295 395 505 790

Nominal Size

1 2 / 3 4 /

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

1 4 / 1 2 /

1 2 /

1 2 /



4 5 6 8 10 12 14 16 18 20 24

Outside Dia. O

10.00 11.00 12.50 15.00 17.50 20.50 23.00 25.50 28.00 30.50 36.00

Thk. C

1.38 1.50 1.62 1.88 2.12 2.25 2.38 2.50 2.62 2.75 3.00

Raised Face Dia. R

6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

Bore

Fillet Radius r

0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50

Welding Neck Socket B1 . r e s a h c r u p y b d e i f i c e p s e b o T

Slip-on B2

4.57 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

Length Thru Hub

Lap Joint B3

4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

Welding Neck Y1

3.50 4.00 4.06 4.62 4.88 5.38 5.88 6.00 6.50 6.62 6.88

Slip-on Socket Y2

Lap Joint Y3

SIZES 1 / 2" THRU 31 / 2" 2.00 2.00 2.12 2.12 2.25 2.25 2.69 2.69 2.88 4.00 3.12 4.25 3.31 4.62 3.69 5.00 3.88 5.38 4.00 5.75 4.50 6.62


(1/2" TO 3" ONLY)


Dia. Hub at Bevel A

Hub Dia. X

Bolt Circle

ARE IDENTICAL WITH CLASS 600 1.44 4.50 5.75 7.88 1.69 5.56 7.00 9.25 1.81 6.63 8.12 10.62 2.00 8.63 10.25 13.00 2.19 10.75 12.62 15.25 2.38 12.75 14.75 17.75 2.50 14.00 16.75 20.25 2.69 16.00 19.00 22.50 2.75 18.00 21.00 24.75 2.88 20.00 23.12 27.00 3.25 24.00 27.62 32.00

Approx. Weight

Dia. Holes

No. Holes

1.00 1.00 1.00 1.12 1.25 1.38 1.38 1.50 1.50 1.62 1.88

8 8 12 12 16 16 20 20 24 24 24

Welding Neck

35 43 57 89 125 175 230 295 350 425 620


26 31 44 67 91 130 180 235 285 345 510

Lap Joint

25 29 42 64 110 150 205 260 315 385 570

Blind

33 44 61 100 155 225 290 370 455 587 890

Nominal Size

4 5 6 8 10 12 14 16 18 20 24



1 2 / 3 4 /

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

1 4 / 1 2 /

1 2 /

1 2 /

Outside Dia. O

Thk. C

Raised Face Dia. R

3.75 4.62 4.88 5.25 6.12 6.50 7.50 8.25 9.00 10.75 13.00 14.00 16.50 20.00 22.00 23.75 27.00 29.25 32.00 37.00

0.56 0.62 0.69 0.81 0.88 1.00 1.12 1.25 1.38 1.50 1.75 1.88 2.19 2.50 2.62 2.75 3.00 3.25 3.50 4.00

1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 5.50 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

Bore

Fillet Radius r

0.12 0.12 0.12 0.19 0.25 0.31 0.31 0.38 0.38 0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50



Length Thru Hub

Slip-on B2

Lap Joint B3

Welding Neck Y1

Slip-on Socket Y2

Lap Joint Y3

0.88 1.09 1.36 1.70 1.95 2.44 2.94 3.57 4.07 4.57 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

0.90 1.11 1.38 1.72 1.97 2.46 2.97 3.60 4.10 4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

2.06 2.25 2.44 2.62 2.75 2.88 3.12 3.25 3.38 4.00 4.50 4.62 5.25 6.00 6.12 6.50 7.00 7.25 7.50 8.00

0.88 1.00 1.06 1.12 1.25 1.44 1.62 1.81 1.94 2.12 2.38 2.62 3.00 3.38 3.62 3.69 4.19 4.62 5.00 5.50

0.88 1.00 1.06 1.12 1.25 1.44 1.62 1.81 1.94 2.12 2.38 2.62 3.00 4.38 4.62 5.00 5.50 6.00 6.50 7.25


(1/2" TO 3" ONLY)


0.62 0.62 0.69 0.81 0.88 1.12 1.25 1.38 1.56 1.62 1.88 2.00 2.25 2.56 2.75 2.88 3.06 3.12 3.25 3.62

Depth of Socket D

0.38 0.44 0.50 0.56 0.62 0.69 0.75 0.81 0.88 0.94 0.94 1.06 1.25 1.31 1.56 1.62 1.75 1.94 2.12 2.50

Dia. Hub at Bevel A

0.84 1.05 1.32 1.66 1.90 2.38 2.88 3.50 4.00 4.50 5.56 6.62 8.62 10.75 12.75 14.00 16.00 18.00 20.00 24.00

Hub Dia. X

1.50 1.88 2.12 2.50 2.75 3.31 3.94 4.62 5.25 6.00 7.44 8.75 10.75 13.50 15.75 17.00 19.50 21.50 24.00 28.25

Approx. Weight

Bolt Circle

Dia. Holes

No. Holes

2.62 3.25 3.50 3.88 4.50 5.00 5.88 6.62 7.25 8.50 10.50 11.50 13.75 17.00 19.25 20.75 23.75 25.75 28.50 33.00

0.62 0.75 0.75 0.75 0.88 0.75 0.88 0.88 1.00 1.00 1.12 1.12 1.25 1.38 1.38 1.50 1.62 1.75 1.75 2.00

4 4 4 4 4 8 8 8 8 8 8 12 12 16 20 20 20 20 24 24

Welding Neck

2 4 4 6 8 12 18 23 26 42 68 81 120 190 225 280 390 475 590 830


Lap Joint

Blind

2 3 4 5 7 9 13 16 21 37 63 80 115 170 200 230 330 400 510 730

2 3 4 5 7 9 12 15 20 36 61 78 110 170 200 250 365 435 570 810

2 3 4 5 8 10 15 20 29 41 68 86 140 230 295 355 495 630 810 1250

Nominal Size

1 2 / 3 4 /

1 1 1 2 2 3 3 4 5 6 8 10 12 14 16 18 20 24

1 4 / 1 2 /

1 2 /

1 2 /



3 4 5 6 8 10 12 14 16 18 20 24

Outside Dia. O

9.50 11.50 13.75 15.00 18.50 21.50 24.00 25.25 27.75 31.00 33.75 41.00

Thk. C

1.50 1.75 2.00 2.19 2.50 2.75 3.12 3.38 3.50 4.00 4.25 5.50

Raised Face Dia. R

5.00 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

Bore

Fillet Radius r

0.38 0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50

Welding Neck Socket B1 . r e s a h c r u p y b d e i f i c e p s e b o T

Slip-on B2

3.57 4.57 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

Length Thru Hub

Lap Joint B3

3.60 4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

Welding Neck Y1

4.00 4.50 5.00 5.50 6.38 7.25 7.88 8.38 8.50 9.00 9.75 11.50

Slip-on Socket Y2

Lap Joint Y3

SIZES 1 / 2" THRU 21 / 2" 2.12 2.12 2.75 2.75 3.13 3.13 3.38 3.38 4.00 4.50 4.25 5.00 4.62 5.62 5.12 6.12 5.25 6.50 6.00 7.50 6.25 8.25 8.00 10.50


(1/2" TO 3" ONLY)


Dia. Hub at Bevel A

Hub Dia. X

Bolt Circle

ARE IDENTICAL WITH CLASS 600 1.62 3.50 5.00 7.50 1.88 4.50 6.25 9.25 2.12 5.56 7.50 11.00 2.25 6.63 9.25 12.50 2.50 8.63 11.75 15.50 2.81 10.75 14.50 18.50 3.00 12.75 16.50 21.00 3.25 14.00 17.75 22.00 3.38 16.00 20.00 24.25 3.50 18.00 22.25 27.00 3.62 20.00 24.50 29.50 4.00 24.00 29.50 35.50

Dia. Holes

1.00 1.25 1.38 1.25 1.50 1.50 1.50 1.62 1.75 2.00 2.12 2.62

Approx. Weight No. Holes

Welding Neck


8 8 8 12 12 16 20 20 20 20 20 20

31 53 86 110 175 260 325 400 495 680 830 1500

26 53 83 110 170 245 325 400 425 600 730 1400

Lap Joint

25 51 81 105 190 275 370 415 465 650 810 1550

Blind

29 54 87 115 200 290 415 520 600 850 1075 2025

Nominal Size

3 4 5 6 8 10 12 14 16 18 20 24



/ 2 3 / 4 1

1 1 1 / 4 1 1 / 2 2 2 1 / 2 3 4 5 6 8 10 12 14 16 18 20 24

Outside Dia. O

4.75 5.12 5.88 6.25 7.00 8.50 9.62 10.50 12.25 14.75 15.50 19.00 23.00 26.50 29.50 32.50 36.00 38.75 46.00

Bore

Thk. C

Raised Face Dia. R

Fillet Radius r

0.88 1.00 1.12 1.12 1.25 1.50 1.63 1.88 2.12 2.88 3.25 3.62 4.25 4.88 5.25 5.75 6.38 7.00 8.00

1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25

0.12 0.12 0.12 0.19 0.25 0.31 0.31 0.38 0.44 0.44 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50



Length Thru Hub

Slip-on B2

Lap Joint B3

0.88 1.09 1.36 1.70 1.95 2.44 2.94 3.57 4.57 5.66 6.72 8.72 10.88 12.88 14.14 16.16 18.18 20.20 24.25

0.90 1.11 1.38 1.72 1.97 2.46 2.97 3.60 4.60 5.69 6.75 8.75 10.92 12.92 14.18 16.19 18.20 20.25 24.25

Welding Neck Y1

2.38 2.75 2.88 2.88 3.25 4.00 4.12 4.62 4.88 6.12 6.75 8.38 10.00 11.12 11.75 12.25 12.88 14.00 16.00

Slip-on Socket Y2

Lap Joint Y3

1.25 1.38 1.62 1.62 1.75 2.25 2.50 2.88 3.56 4.12 4.69 5.62 6.25 7.12 . — . — . — . — . —

1.25 1.38 1.62 1.62 1.75 2.25 2.50 2.88 3.56 4.12 4.69 5.62 7.00 8.62 9.50 10.25 10.88 11.50 13.00


(1/2" TO 2 1/2" ONLY)

(1/2" TO 2 1/2" ONLY)


Depth of Socket D

Dia. Hub at Bevel A

0.88 1.00 1.12 1.19 1.25 1.50 1.88 2.00 2.25 2.50 2.75 3.00 3.31 3.63 .— .— .— .— .—

0.38 0.44 0.50 0.56 0.62 0.69 0.75 0.81 0.94 0.94 1.06 1.25 1.31 1.56 1.63 1.75 1.94 2.13 2.50

0.84 1.05 1.32 1.66 1.90 2.38 2.88 3.50 4.50 5.56 6.63 8.63 10.75 12.75 14.00 16.00 18.00 20.00 24.00

Hub Dia. X

1.50 1.75 2.06 2.50 2.75 4.12 4.88 5.25 6.38 7.75 9.00 11.50 14.50 17.75 19.50 21.75 23.50 25.25 30.00

Approx. Weight

Bolt Circle

Dia. Holes

No. Holes

Welding Neck


3.25 3.50 4.00 4.38 4.88 6.50 7.50 8.00 9.50 11.50 12.50 15.50 19.00 22.50 25.00 27.75 30.50 32.75 39.00

0.88 0.88 1.00 1.00 1.12 1.00 1.12 1.25 1.38 1.62 1.50 1.75 2.00 2.12 2.38 2.62 2.88 3.12 3.62

4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 16 16 16 16

5 6 9 10 13 25 36 48 73 130 165 275 455 690 940 1250 1625 2050 3325

4 5 8 9 12 25 36 48 73 130 165 260 435 580 — — — — —

Lap Joint

4 5 8 9 12 25 35 47 75 140 170 285 485 630 890 1150 1475 1775 2825

Blind

4 6 8 9 13 25 35 48 73 140 160 300 510 690 975 1300 1750 2225 3625

Nominal Size

/ 2 3 / 4 1 1 1 / 4 1 1 / 2 2 2 1 / 2 3 4 5 6 8 10 12 14 16 18 20 24 1



/ 2 3 / 4 1

1 1 1 / 4 1 1 / 2 2 2 1 / 2 3 4 5 6 8 10 12

Outside Dia. O

5.25 5.50 6.25 7.25 8.00 9.25 10.50 12.00 14.00 16.50 19.00 21.75 26.50 30.00

Bore

Thk. C

Raised Face Dia. R

Fillet Radius r

1.19 1.25 1.38 1.50 1.75 2.00 2.25 2.62 3.00 3.62 4.25 5.00 6.50 7.25

1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 6.19 7.31 8.50 10.62 12.75 15.00

0.12 0.12 0.12 0.19 0.25 0.31 0.31 0.38 0.44 0.44 0.50 0.50 0.50 0.50



Length Thru Hub

Slip-on B2

Lap Joint B3

0.88 1.09 1.36 1.70 1.95 2.44 2.94 3.57 4.57 5.66 6.72 8.72 10.88 12.88

0.90 1.11 1.38 1.72 1.97 2.46 2.97 3.60 4.60 5.69 6.75 8.75 10.92 12.92

Welding Neck Y1

2.88 3.12 3.50 3.75 4.38 5.00 5.62 6.62 7.50 9.00 10.75 12.50 16.50 18.25

Slip-on Socket Y2

1.56 1.69 1.88 2.06 2.38 2.75 3.12 3.62 4.25 5.12 6.00 7.00 9.00 10.00

Lap Joint Y3

1.56 1.69 1.88 2.06 2.38 2.75 3.12 3.62 4.25 5.12 6.00 7.00 9.00 10.00



Dia. Hub at Bevel A

1.12 1.25 1.38 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.75 4.25 4.75

0.84 1.05 1.32 1.66 1.90 2.38 2.88 3.50 4.50 5.56 6.63 8.63 10.75 12.75

Hub Dia. X

1.69 2.00 2.25 2.88 3.12 3.75 4.50 5.25 6.50 8.00 9.25 12.00 14.75 17.38

Approx. Weight

Bolt Circle

Dia. Holes

No. Holes

3.50 3.75 4.25 5.12 5.75 6.75 7.75 9.00 10.75 12.75 14.50 17.25 21.25 24.38

0.88 0.88 1.00 1.12 1.25 1.12 1.25 1.38 1.62 1.88 2.12 2.12 2.62 2.88

4 4 4 4 4 8 8 8 8 8 8 12 12 12

Welding Neck


7 8 12 17 25 42 52 94 145 245 380 580 1075 1525

7 8 11 16 22 38 55 83 125 210 325 485 930 1100

Lap Joint

7 8 11 16 22 37 53 80 120 205 315 470 900 1100

Blind

7 8 11 17 23 39 56 86 135 225 345 530 1025 1300

Nominal Size

1 2 / 3 / 4

1 1 4 1 / 1 1 / 2 2 1 2 2 / 3 4 5 6 8 10 12

ASME B16.5 Flanges

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