ANSI/ASME B16.47 Flange Series A / MSS SP44 Flange Dimensions (class150lb-900lb)
PDF: ANSI/ASME B16.47 Flange Series A / MSS SP44 Flange Dimensions (class150lb-900lb)
Class 150lbs
Pipe |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Radius |
||||||
Nominal Pipe Size |
|||||||||||
Overall Diameter |
WNF FlangeThickness min |
Blind FlangeThickness min |
Overall LengthWNF |
Diameter at Weld Bevel |
Hub Diameter |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
Fillet |
|
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||
22 |
29.50 749.30 |
1.81 45.97 |
1.81 45.97 |
5.88 149.35 |
22.00 558.80 |
24.00 609.60 |
25.25 641.35 |
20 |
1.38 35.05 |
27.25 692.15 |
0.38 9.65 |
26 |
34.25 869.95 |
2.69 68.33 |
2.69 68.33 |
4.75 120.65 |
26.00 660.40 |
26.62 676.15 |
29.50 749.30 |
24 |
1.38 35.05 |
31.75 806.45 |
0.38 9.65 |
28 |
36.50 927.10 |
2.81 71.37 |
2.81 71.37 |
4.94 125.48 |
28.00 711.20 |
28.62 726.95 |
31.50 800.10 |
28 |
1.38 35.05 |
34.00 863.60 |
0.44 11.18 |
30 |
38.75 984.25 |
2.94 74.68 |
2.94 74.68 |
5.38 136.65 |
30.00 762.00 |
30.75 781.05 |
33.75 857.25 |
28 |
1.38 35.05 |
36.00 914.40 |
0.44 11.18 |
32 |
41.75 1060.5 |
3.19 81.03 |
3.19 81.03 |
5.69 144.53 |
32.00 812.80 |
32.75 831.85 |
36.00 914.40 |
28 |
1.62 41.15 |
38.50 977.90 |
0.44 11.18 |
34 |
43.75 1111.3 |
3.25 82.55 |
3.25 82.55 |
5.88 149.35 |
34.00 863.60 |
34.75 882.65 |
38.00 965.20 |
32 |
1.62 41.15 |
40.50 1028.7 |
0.50 12.70 |
36 |
46.00 1168.4 |
3.56 90.42 |
3.56 90.42 |
6.19 157.23 |
36.00 914.40 |
36.75 933.45 |
40.25 1022.4 |
32 |
1.62 41.15 |
42.75 1085.9 |
0.50 12.70 |
38 |
48.75 1238.3 |
3.44 87.38 |
3.44 87.38 |
6.19 157.23 |
38.00 965.20 |
39.00 990.60 |
42.25 1073.2 |
32 |
1.62 41.15 |
45.25 1149.4 |
0.50 12.70 |
40 |
50.75 1289.1 |
3.56 90.42 |
3.56 90.42 |
6.44 163.58 |
40.00 1016.0 |
41.00 1041.4 |
44.25 1124.0 |
36 |
1.62 41.15 |
47.25 1200.2 |
0.50 12.70 |
42 |
53.00 1346.2 |
3.81 96.77 |
3.81 96.77 |
6.75 171.45 |
42.00 1066.8 |
43.00 1092.2 |
47.00 1193.8 |
36 |
1.62 41.15 |
49.50 1257.3 |
0.50 12.70 |
44 |
55.25 1403.4 |
4.00 101.60 |
4.00 101.60 |
7.00 177.80 |
44.00 1117.6 |
45.00 1143.0 |
49.00 1244.6 |
40 |
1.62 41.15 |
51.75 1314.5 |
0.50 12.70 |
46 |
57.25 1454.2 |
4.06 103.12 |
4.06 103.12 |
7.31 185.67 |
46.00 1168.4 |
47.12 1196.9 |
51.00 1295.4 |
40 |
1.62 41.15 |
53.75 1365.3 |
0.50 12.70 |
48 |
59.50 1511.3 |
4.25 107.95 |
4.25 107.95 |
7.56 192.02 |
48.00 1219.2 |
49.12 1247.7 |
53.50 1358.9 |
44 |
1.62 41.15 |
56.00 1422.4 |
0.50 12.70 |
Notes -ASME B16.47 Series A flanges (> NPS 26) are MMS SP-44 flanges. MSS SP-44 also covers NPS 12 to NPS 24 flanges
which are equivalent to ASME B16.5. MSS SP-44 is the only source for the NPS 22 flange dimensions above. -Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.
-Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard). -WNF = Weld Neck Flange. The large end of the hub may be straight or tapered.
Class 300 lbs
Pipe |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Radius |
||||||
Nominal Pipe Size |
|||||||||||
Overall Diameter |
WNF FlangeThickness min |
Blind FlangeThickness min |
Overall LengthWNF |
Diameter at Weld Bevel |
Hub Diameter |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
Fillet |
|
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||
22 |
33.00 838.20 |
2.62 66.55 |
2.62 66.55 |
6.50 165.10 |
22.00 558.80 |
25.25 641.35 |
25.25 641.35 |
24 |
1.62 41.15 |
29.25 742.95 |
0.38 9.65 |
26 |
38.25 971.55 |
3.12 79.25 |
3.31 84.07 |
7.25 184.15 |
26.00 660.40 |
28.38 720.85 |
29.50 749.30 |
28 |
1.75 44.45 |
34.50 876.30 |
0.38 9.65 |
28 |
40.75 1035.1 |
3.38 85.85 |
3.56 90.42 |
7.75 196.85 |
28.00 711.20 |
30.50 774.70 |
31.50 800.10 |
28 |
1.75 44.45 |
37.00 939.80 |
0.44 11.18 |
30 |
43.00 1092.2 |
3.62 91.95 |
3.75 95.25 |
8.25 209.55 |
30.00 762.00 |
32.56 827.02 |
33.75 857.25 |
28 |
1.88 47.75 |
39.25 996.95 |
0.44 11.18 |
32 |
45.25 1149.4 |
3.88 98.55 |
3.94 100.08 |
8.75 222.25 |
32.00 812.80 |
34.69 881.13 |
36.00 914.40 |
28 |
2.00 50.80 |
41.50 1054.1 |
0.44 11.18 |
34 |
47.50 120.50 |
4.00 101.60 |
4.12 104.65 |
9.12 231.65 |
34.00 863.60 |
36.88 936.75 |
38.00 965.20 |
28 |
2.00 50.80 |
43.50 1104.9 |
0.50 12.70 |
36 |
50.00 1270.0 |
4.12 104.65 |
4.38 111.25 |
9.50 241.30 |
36.00 914.40 |
39.00 990.60 |
40.25 1022.4 |
32 |
2.12 53.85 |
46.00 1168.4 |
0.50 12.70 |
38 |
46.00 1168.4 |
4.25 107.95 |
4.25 107.95 |
7.12 180.85 |
38.00 965.20 |
39.12 993.65 |
40.50 1028.7 |
32 |
1.62 41.15 |
43.00 1092.2 |
0.50 12.70 |
40 |
48.75 1238.3 |
4.50 114.30 |
4.50 114.30 |
7.62 193.55 |
40.00 1016.0 |
41.25 1047.8 |
42.75 1085.9 |
32 |
1.75 44.45 |
45.50 1155.7 |
0.50 12.70 |
42 |
50.75 1289.1 |
4.69 119.13 |
4.69 119.13 |
7.88 200.15 |
42.00 1066.8 |
43.25 1098.6 |
44.75 1136.7 |
32 |
1.75 44.45 |
47.50 1206.6 |
0.50 12.70 |
44 |
53.25 1352.6 |
4.88 123.95 |
4.88 123.95 |
8.12 206.25 |
44.00 1117.6 |
45.25 1149.4 |
47.00 1193.8 |
32 |
1.88 47.75 |
49.75 1263.7 |
0.50 12.70 |
46 |
55.75 1416.1 |
5.06 128.52 |
5.06 128.52 |
8.50 215.90 |
46.00 1168.4 |
47.38 1203.5 |
49.00 1244.0 |
28 |
2.00 50.80 |
52.00 1320.8 |
0.50 12.70 |
48 |
57.75 1466.9 |
5.25 133.35 |
5.25 133.35 |
8.81 223.77 |
48.00 1219.2 |
49.38 1254.3 |
51.25 1301.8 |
32 |
2.00 50.80 |
54.00 1371.6 |
0.50 12.70 |
Notes -ASME B16.47 Series A flanges (> NPS 26) are MMS SP-44 flanges. MSS SP-44 also covers NPS 12 to NPS 24 flanges
which are equivalent to ASME B16.5. MSS SP-44 is the only source for the NPS 22 flange dimensions above. -Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.
-Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard). -WNF = Weld Neck Flange. -The large end of the hub may be straight or tapered.
Class 400 lbs
Pipe |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Radius |
||||||
Nominal Pipe Size |
|||||||||||
Overall Diameter |
WNF FlangeThickness min |
Blind FlangeThickness min |
Overall LengthWNF |
Diameter at Weld Bevel |
Hub Diameter |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
Fillet |
|
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||
22 |
33.00 838.20 |
2.88 73.15 |
2.88 73.15 |
6.75 171.45 |
22.00 558.80 |
25.25 641.35 |
25.25 641.35 |
24 |
1.75 44.45 |
29.25 742.95 |
0.44 11.18 |
26 |
38.25 971.55 |
3.50 88.90 |
3.88 98.55 |
7.62 193.55 |
26.00 660.40 |
28.62 726.95 |
29.50 749.30 |
28 |
1.88 47.75 |
34.50 876.30 |
0.44 11.18 |
28 |
40.75 1035.1 |
3.75 95.25 |
4.12 104.65 |
8.12 206.25 |
28.00 711.20 |
30.81 782.57 |
31.50 800.10 |
28 |
2.00 50.80 |
37.00 939.80 |
0.50 12.70 |
30 |
43.00 1092.2 |
4.00 101.60 |
4.38 111.25 |
8.62 218.95 |
30.00 762.00 |
32.94 836.68 |
33.75 857.25 |
28 |
2.12 53.85 |
39.25 996.95 |
0.50 12.70 |
32 |
45.25 1149.4 |
4.25 107.95 |
4.56 115.82 |
9.12 231.65 |
32.00 812.80 |
35.00 889.00 |
36.00 914.40 |
28 |
2.12 53.85 |
41.50 1054.1 |
0.50 12.70 |
34 |
47.50 1206.5 |
4.38 111.25 |
4.81 122.17 |
9.50 241.30 |
34.00 863.60 |
37.19 944.63 |
38.00 965.20 |
28 |
2.12 53.85 |
43.50 1104.9 |
0.56 14.22 |
36 |
50.00 1270.0 |
4.50 114.30 |
5.06 128.52 |
9.88 250.95 |
36.00 914.40 |
39.38 1000.3 |
40.25 1022.4 |
32 |
2.12 53.85 |
46.00 1168.4 |
0.56 14.22 |
38 |
47.50 1206.5 |
4.88 123.95 |
4.88 123.95 |
8.12 206.25 |
48.00 1219.2 |
39.50 1003.3 |
40.75 1035.1 |
32 |
1.88 47.75 |
44.00 1117.6 |
0.56 14.22 |
40 |
50.00 1270.0 |
5.12 130.05 |
5.12 130.05 |
8.50 215.90 |
40.00 1016.0 |
41.50 1054.1 |
43.00 1092.2 |
32 |
2.00 50.80 |
46.25 1174.8 |
0.56 14.22 |
42 |
52.00 1320.8 |
5.25 133.35 |
5.25 133.35 |
8.81 223.77 |
42.00 1066.8 |
43.62 1107.9 |
45.00 1143.0 |
32 |
2.00 50.80 |
48.25 1225.6 |
0.56 14.22 |
44 |
54.50 1384.3 |
5.50 139.70 |
5.50 139.70 |
9.18 233.17 |
44.00 1117.6 |
45.62 1158.7 |
47.25 1200.2 |
32 |
2.12 53.85 |
50.50 1282.7 |
0.56 14.22 |
46 |
56.75 1441.5 |
5.75 146.05 |
5.75 146.05 |
9.62 244.35 |
46.00 1168.4 |
47.75 1212.9 |
49.50 1257.3 |
36 |
2.12 53.85 |
52.75 1339.9 |
0.56 14.22 |
48 |
59.50 1511.3 |
6.00 152.40 |
6.00 152.40 |
10.12 257.05 |
48.00 1219.2 |
49.88 1267.0 |
51.50 1308.1 |
28 |
2.38 60.45 |
55.25 1403.4 |
0.56 14.22 |
Notes
-ASME B16.47 Series A flanges (> NPS 26) are MMS SP-44 flanges. MSS SP-44 also covers NPS 12 to NPS 24 flanges which are equivalent to ASME B16.5. MSS SP-44 is the only source for the NPS 22 flange dimensions above.
-Class 400 Series A dimensions at NPS 38 and larger also apply to Class 400 Series B flanges.
-Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.
-Flat face flanges may be provided at full thickness, C + raised face, or with raised face removed (the latter is nonstandard).
-WNF = Weld Neck Flange.
-The large end of the hub may be straight or tapered.
Class 600 lbs
Pipe |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Radius |
||||||
Nominal Pipe Size |
|||||||||||
Overall Diameter |
WNF FlangeThickness min |
Blind FlangeThickness min |
Overall LengthWNF |
Diameter at Weld Bevel |
Hub Diameter |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
Fillet |
|
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||
22 |
34.25 869.95 |
3.75 95.25 |
3.75 95.25 |
7.75 196.85 |
22.00 558.80 |
26.25 666.75 |
25.25 641.35 |
24 |
1.88 47.75 |
30.62 777.75 |
0.44 11.18 |
26 |
40.00 1016.0 |
4.25 107.95 |
4.94 125.48 |
8.75 222.25 |
26.00 660.40 |
29.44 747.78 |
29.50 749.30 |
28 |
2.00 50.80 |
36.00 914.40 |
0.50 12.70 |
28 |
42.25 1073.2 |
4.38 111.25 |
5.19 131.83 |
9.25 234.95 |
28.00 711.20 |
31.62 803.15 |
31.50 800.10 |
28 |
2.12 53.85 |
38.00 965.20 |
0.50 12.70 |
30 |
44.50 1130.3 |
4.50 114.30 |
5.50 139.70 |
9.75 247.65 |
30.00 762.00 |
33.94 862.08 |
33.75 857.25 |
28 |
2.12 53.85 |
40.25 1022.4 |
0.50 12.70 |
32 |
47.00 1193.8 |
4.62 117.35 |
5.81 147.57 |
10.25 260.35 |
32.00 812.80 |
36.12 917.45 |
36.00 914.40 |
28 |
2.38 60.45 |
42.50 1079.5 |
0.50 12.70 |
34 |
49.00 1244.6 |
4.75 120.65 |
6.06 153.92 |
10.62 269.75 |
34.00 863.60 |
38.31 973.07 |
38.00 965.20 |
28 |
2.38 60.45 |
44.50 1130.3 |
0.56 14.22 |
36 |
51.75 1314.5 |
4.88 123.95 |
6.38 162.05 |
11.12 282.45 |
36.00 914.40 |
40.62 1031.75 |
40.25 1022.35 |
28 |
2.62 66.55 |
47.00 1193.0 |
0.56 14.22 |
38 |
50.00 1270.0 |
6.00 152.40 |
6.12 155.45 |
10.00 254.00 |
38.00 965.20 |
40.25 1022.35 |
41.50 1054.10 |
28 |
2.38 60.45 |
45.75 1162.1 |
0.56 14.22 |
40 |
52.00 1320.8 |
6.25 158.75 |
6.38 162.05 |
10.38 263.65 |
40.00 1016.0 |
42.25 1073.2 |
43.75 1111.3 |
32 |
2.38 60.45 |
47.75 1212.9 |
0.56 14.22 |
42 |
55.25 1403.4 |
6.62 168.15 |
6.75 171.45 |
11.00 279.40 |
42.00 1066.8 |
44.38 1127.3 |
46.00 1168.4 |
28 |
2.62 66.55 |
50.50 1282.7 |
0.56 14.22 |
44 |
57.25 1454.2 |
6.81 172.97 |
7.00 177.80 |
11.38 289.05 |
44.00 1117.6 |
46.50 1181.1 |
48.25 1225.6 |
32 |
2.62 66.55 |
52.50 1333.5 |
0.56 14.22 |
46 |
59.50 1511.3 |
7.06 179.32 |
7.31 185.67 |
11.81 299.97 |
46.00 1168.4 |
48.62 1235.0 |
50.25 1276.4 |
32 |
2.62 66.55 |
54.75 1390.7 |
0.56 14.22 |
48 |
62.75 1593.9 |
7.44 188.98 |
7.69 195.33 |
12.44 315.98 |
48.00 1219.2 |
50.75 1289.1 |
52.50 1333.5 |
32 |
2.88 73.15 |
57.50 1460.5 |
0.56 14.22 |
Notes
-ASME B16.47 Series A flanges (> NPS 26) are MMS SP-44 flanges. MSS SP-44 also covers NPS 12 to NPS 24 flanges which are equivalent to ASME B16.5. MSS SP-44 is the only source for the NPS 22 flange dimensions above.
-Class 600 Series A dimensions at NPS 38 and larger also apply to Class 600 Series B flanges.
-Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.
-Flat face flanges may be provided at full thickness, C + raised face, or with raised face removed (the latter is nonstandard).
-WNF = Weld Neck Flange.
-The large end of the hub may be straight or tapered.
Class 900 lbs
Pipe |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Radius |
||||||
Nominal Pipe Size |
|||||||||||
Overall Diameter |
WNF FlangeThickness min |
Blind FlangeThickness min |
Overall LengthWNF |
Diameter at Weld Bevel |
Hub Diameter |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
Fillet |
|
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||
26 |
42.75 1085.9 |
5.50 139.70 |
6.31 160.27 |
11.25 285.75 |
26.00 660.40 |
30.50 774.70 |
29.50 749.30 |
20 |
2.88 73.15 |
37.50 952.50 |
0.44 11.18 |
28 |
46.00 1168.4 |
5.62 142.75 |
6.75 171.45 |
11.75 298.45 |
28.00 711.20 |
32.75 831.85 |
31.50 800.10 |
20 |
3.12 79.25 |
40.25 1022.4 |
0.50 12.70 |
30 |
48.50 1231.9 |
5.88 149.35 |
7.18 182.37 |
12.25 311.15 |
30.00 762.00 |
35.00 889.00 |
33.75 857.25 |
20 |
3.12 79.25 |
42.75 1085.9 |
0.50 12.70 |
32 |
51.75 1314.5 |
6.25 158.75 |
7.62 193.55 |
13.00 330.20 |
32.00 812.80 |
37.25 946.15 |
36.00 914.40 |
20 |
3.38 85.85 |
45.50 1155.7 |
0.50 12.70 |
34 |
55.00 1397.0 |
6.50 165.10 |
8.06 204.72 |
13.75 349.25 |
34.00 863.60 |
39.62 1006.4 |
38.00 965.20 |
20 |
3.62 91.95 |
48.25 1225.6 |
0.56 14.22 |
36 |
57.50 1460.5 |
6.75 171.45 |
8.44 214.38 |
14.25 361.95 |
36.00 914.40 |
41.88 1063.8 |
40.25 1022.4 |
20 |
3.62 91.95 |
50.75 1289.1 |
0.56 14.22 |
38 |
57.50 1460.5 |
7.50 190.50 |
8.50 215.90 |
13.88 352.55 |
38.00 965.20 |
42.25 1073.2 |
43.25 1098.6 |
20 |
3.62 91.95 |
50.75 1289.1 |
0.75 19.05 |
40 |
59.50 1511.3 |
7.75 196.85 |
8.81 223.77 |
14.31 363.47 |
40.00 1016.0 |
44.38 1127.3 |
45.75 1162.1 |
24 |
3.62 91.95 |
52.75 1339.9 |
0.81 20.57 |
42 |
61.50 1562.1 |
8.12 206.25 |
9.12 231.65 |
14.62 371.35 |
42.00 1066.8 |
46.31 1176.3 |
47.75 1212.9 |
24 |
3.62 91.95 |
54.75 1390.7 |
0.81 20.57 |
44 |
64.88 1648.0 |
8.44 214.38 |
9.56 242.82 |
15.38 390.65 |
44.00 1117.6 |
48.62 1235.0 |
50.00 1270.0 |
24 |
3.88 98.55 |
57.62 1463.6 |
0.88 22.35 |
46 |
68.25 1733.6 |
8.88 225.55 |
10.06 255.52 |
16.18 410.97 |
46.00 1168.4 |
50.88 1292.4 |
52.50 1333.5 |
24 |
4.12 104.65 |
60.50 1536.7 |
0.88 22.35 |
48 |
70.25 1784.4 |
9.19 233.43 |
10.38 263.65 |
16.50 419.10 |
48.00 1219.2 |
52.88 1343.2 |
54.50 1384.3 |
24 |
4.12 104.65 |
62.50 1587.5 |
0.94 23.88 |
Notes
-ASME B16.47 Series A flanges (> NPS 26) are MMS SP-44 flanges. MSS SP-44 also covers NPS 12 to NPS 24 flanges which are equivalent to ASME B16.5. MSS SP-44 is the only source for the NPS 22 flange dimensions above.
-Class 900 Series A dimensions at NPS 38 and larger also apply to Class 900 Series B flanges.
-Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.
-Flat face flanges may be provided at full thickness, C + raised face, or with raised face removed (the latter is nonstandard).
-WNF = Weld Neck Flange.
-The large end of the hub may be straight or tapered.