BLIND FLANGES ASME B16.5 Class 600

Nominal
Size
NPS
Outside
Diameter
of
Flange
Thickness
of
Flange
Diameter Of Raised
Face (1)
Number of
Bolt Holes
Diameter
of
Bolt
Holes
Diameter
of
Bolts
Diameter
of
Bolt
Circle
Approx.
Weight

Pounds
Kg

O C R
½ in. 3.75 0.56 1.38 4 0.62 ½ 2.62 2
mm 95.3 14.2 35.1 15.7 12.7 66.5 1
¾ in. 4.62 0.62 1.69 4 0.75  5/8 3.25 3
mm 117.3 15.7 42.9 19.1 15.9 82.6 1
1 in. 4.88 0.69 2 4 0.75  5/8 3.5 4
mm 124 17.5 50.8 19.1 15.9 88.9 2
1 ¼  in. 5.25 0.81 2.5 4 0.75  5/8 3.88 5
mm 133.4 20.6 63.5 19.1 15.9 98.6 2
1 ½  in. 6.12 0.88 2.88 4 0.88 ¾ 4.5 8
mm 155.4 22.4 73.2 22.4 19.1 114.3 4
2 in. 6.5 1 3.62 8 0.75  5/8 5 10
mm 165.1 25.4 91.9 19.1 15.9 127 5
2 ½  in. 7.5 1.12 4.12 8 0.88 ¾ 5.88 15
mm 190.5 28.4 104.6 22.4 19.1 149.4 7
3 in. 8.25 1.25 5 8 0.88 ¾ 6.62 20
209.6 31.8 127 22.4 19.1 168.1 9
3 ½ in. 9 1.38 5.5 8 1  7/8 7.25 29
mm 228.6 35.1 139.7 25.4 22.2 184.2 13
4 in. 10.75 1.5 6.19 8 1  7/8 8.5 41
mm 273.1 38.1 157.2 25.4 22.2 215.9 19
5 in. 13 1.75 7.31 8 1.12 1 10.5 68
mm 330.2 44.5 185.7 28.4 25.4 266.7 31
6 in. 14 1.88 8.5 12 1.12 1 11.5 86
mm 355.6 47.8 215.9 28.4 25.4 292.1 39
8 in. 16.5 2.19 10.62 12 1.25 1 1/8 13.75 140
mm 419.1 55.6 269.7 31.8 28.6 349.3 64
10 in. 20 2.5 12.75 16 1.38 1 ¼ 17 230
mm 508 63.5 323.9 35.1 31.8 431.8 104
12 in. 22 2.62 15 20 1.38 1 ¼ 19.25 295
mm 558.8 66.5 381 35.1 31.8 489 134
14 in. 23.75 2.75 16.25 20 1.5 1 3/8 20.75 355
mm 603.3 69.9 412.8 38.1 34.9 527.1 161
16 in. 27 3 18.5 20 1.62 1 ½ 23.75 495
mm 685.8 76.2 469.9 41.1 38.1 603.3 225
18 in. 29.25 3.25 21 20 1.75 1 5/8 25.75 630
mm 743 82.6 533.4 44.5 41.3 654.1 286
20 in. 32 3.5 23 24 1.75 1 5/8 28.5 810
mm 812.8 88.9 584.2 44.5 41.3 723.9 367
24 in. 37 4 27.25 24 2 1 7/8 33 1250
mm 939.8 101.6 692.2 50.8 47.6 838.2 567