SLIP ON FLANGES ASME B16.5 Class 400

Nominal
Size
NPS
Outside
Diameter
of
Flange
Thickness
of
Flange
Diameter
of
Raised
Face
Diameter
Of Hub
At Base
Diameter
of Hub at
Point of
Welding
Length
thru
Hub
Number of
Bolt Holes
Diameter
of
Bolt
Holes
Diameter
of
Bolts
Diameter
of
Bolt
Circle
Approx.
Weight

Pounds
Kg

O C R X A Y
½
¾
1
1 ¼
1 ½ Size ½ thru 3 ½ are identical to Class 600
2
2 ½
3 in.
3 ½ mm
4 in. 10.00 1.38 6.19 5.75 2.00 4.57 8 1.00  7/8 7.88 26
mm 254.00 35.10 157.20 146.10 50.80 116.10 25.40 22.2 200.20 12
5 in. 11.00 1.50 7.31 7.00 2.12 5.66 8 1.00  7/8 9.25 31
mm 279.40 38.10 185.70 177.80 53.80 143.80 25.40 22.2 235.00 14
6 in. 12.50 1.62 8.50 8.12 2.25 6.72 12 1.00  7/8 10.62 44
mm 317.50 41.10 215.90 206.20 57.20 170.70 25.40 22.2 269.70 20
8 in. 15.00 1.88 10.62 10.25 2.69 8.72 12 1.12 1 13.00 67
mm 381.00 47.80 269.70 260.40 68.30 221.50 28.40 25.4 330.20 30
10 in. 17.50 2.12 12.75 12.62 2.88 10.88 16 1.25 1 1/8 15.25 91
mm 444.50 53.80 323.90 320.50 73.20 276.40 31.80 28.6 387.40 41
12 in. 20.50 2.25 15.00 14.75 3.12 12.88 16 1.38 1 ¼ 17.75 130
mm 520.70 57.20 381.00 374.70 79.20 327.20 35.10 31.8 450.90 59
14 in. 23.00 2.38 16.25 16.75 3.31 14.14 20 1.38 1 ¼ 20.25 180
mm 584.20 60.50 412.80 425.50 84.10 359.20 35.10 31.8 514.40 82
16 in. 25.50 2.50 18.50 19.00 3.69 16.16 20 1.50 1 3/8 22.50 235
mm 647.70 63.50 469.90 482.60 93.70 410.50 38.10 34.9 571.50 107
18 in. 28.00 2.62 21.00 21.00 3.88 18.18 24 1.50 1 3/8 24.75 285
mm 711.20 66.50 533.40 533.40 98.60 461.80 38.10 34.9 628.70 129
20 in. 30.50 2.75 23.00 23.12 4.00 20.20 24 1.62 1 ½ 27.00 345
mm 774.70 69.90 584.20 587.20 101.60 513.10 41.10 38.1 685.80 156
24 in. 36.00 3.00 27.25 27.62 4.50 24.25 24 1.88 1 3/4 32.00 510
mm 914.40 76.20 692.20 701.50 114.30 616.00 47.80 44.5 812.80 231