ANSI B16.5 Flange Dimensional Sizes 1/2 to 2 1/2 inches Table Chart
The following is chart data for ANSI B16.5 Flange Dimensional Data Size table for 1/2 to 2 1/2 inches.
DN = diameter nominal (size)
A = flange
b = thickness of flange
D2 = diameter of raised face
D1 = diameter of bolt circle
n = number of bolts
d = diameter of bolt holes
h = height of raised face (RF)
h* = 1/4” = 6.4 mm for ANSI Class 400 - 2500
* for steel flanges only
b = raised face included for ANSI Class 150 - 300
b = raised face not included for ANSI Class 400 2500
See also: ANSI B16.5 Flange Dimensional Sizes 3 to 10 inches Table Chart
DN |
Dim |
ANSI B16.5 Flange Dimensional Sizes 1/2 to 2 1/2 inches Table Chart |
||||||||||||||
125 lbs |
300 lbs |
400 lbs |
600 lbs |
900 lbs |
1500 lbs |
2500 lbs |
||||||||||
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
|||
1/2 |
A |
3 1/2 |
88.9 |
3 3/4 |
95.2 |
3 3/4 |
95.2 |
3 3/4 |
95.2 |
4 3/4 |
121 |
4 3/4 |
121 |
5 1/4 |
133.4 |
|
b |
7/16 |
11.1 |
9/16 |
14.3 |
9/16 |
14.3 |
9/16 |
14.3 |
7/8 |
22.2 |
7/8 |
22.2 |
1 3/16 |
30.2 |
||
D2 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
1 3/8 |
34.9 |
||
D1 |
2 3/8 |
60.3 |
2 5/8 |
66.7 |
2 5/8 |
66.7 |
2 5/8 |
66.7 |
3 1/4 |
82.6 |
3 1/4 |
82.6 |
3 1/2 |
88.9 |
||
n |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
- |
4 |
44 |
||
d |
5/8 |
15.9 |
5/8 |
15.9 |
5/8 |
15.9 |
5/8 |
15.9 |
7/8 |
22.2 |
7/8 |
22.2 |
7/8 |
22.2 |
||
3/4 |
A |
3 7/8 |
98.4 |
4 5/8 |
117.5 |
4 5/8 |
117.5 |
4 5/8 |
117.5 |
5 1/8 |
130 |
5 1/8 |
130 |
5 1/2 |
139.7 |
|
b |
1/2 |
12.7 |
5/8 |
15.9 |
5/8 |
15.9 |
5/8 |
15.9 |
1 |
25.4 |
1 |
25.4 |
1 1/4 |
31.8 |
||
D2 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
1 11/16 |
42.9 |
||
D1 |
2 3/4 |
69.8 |
3 1/4 |
82.5 |
3 1/4 |
82.5 |
3 1/4 |
82.5 |
3 1/2 |
88.9 |
3 1/2 |
88.9 |
3 3/4 |
95.2 |
||
n |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
- |
4 |
44 |
||
d |
5/8 |
15.9 |
3/4 |
19 |
3/4 |
19 |
3/4 |
19 |
7/8 |
22.2 |
7/8 |
22.2 |
7/8 |
22.2 |
||
1 |
A |
4 1/4 |
108 |
4 7/8 |
123.8 |
4 7/8 |
123.8 |
4 7/8 |
123.8 |
5 7/8 |
149.2 |
5 7/8 |
149.2 |
6 1/4 |
159 |
|
b |
9/16 |
14.3 |
11/16 |
17.5 |
11/16 |
17.5 |
11/16 |
17.5 |
1 1/8 |
28.6 |
1 1/8 |
28.6 |
1 3/8 |
34.9 |
||
D2 |
2 |
50.8 |
2 |
50.8 |
2 |
50.8 |
2 |
50.8 |
2 |
50.8 |
2 |
50.8 |
2 |
50.8 |
||
D1 |
3 1/8 |
79.4 |
3 1/2 |
88.9 |
3 1/2 |
88.9 |
3 1/2 |
88.9 |
4 |
102 |
4 |
102 |
4 1/4 |
108 |
||
n |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
||
d |
5/8 |
15.9 |
3/4 |
19 |
3/4 |
19 |
3/4 |
19 |
1 |
25.4 |
1 |
25.4 |
1 |
25.4 |
||
1 1/4 |
A |
4 5/8 |
117.5 |
5 1/4 |
133.4 |
5 1/4 |
133.4 |
5 1/4 |
133.4 |
6 1/4 |
159 |
6 1/4 |
159 |
7 1/4 |
184.2 |
|
b |
5/8 |
15.9 |
3/4 |
19 |
13/16 |
20.6 |
13/16 |
20.6 |
1 1/8 |
28.6 |
1 1/8 |
28.6 |
1 1/2 |
38.1 |
||
D2 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
2 1/2 |
63.5 |
||
D1 |
3 1/2 |
88.9 |
3 7/8 |
98.4 |
3 7/8 |
98.4 |
3 7/8 |
98.4 |
4 3/8 |
111 |
4 3/8 |
111 |
5 1/8 |
130 |
||
n |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
||
d |
5/8 |
15.9 |
3/4 |
19 |
3/4 |
19 |
3/4 |
19 |
1 |
25.4 |
1 |
25.4 |
1 1/8 |
28.6 |
||
1 1/2 |
A |
5 |
127 |
6 1/8 |
155.6 |
6 1/8 |
155.6 |
6 1/8 |
155.6 |
7 |
177.8 |
7 |
177.8 |
8 |
203 |
|
b |
11/16 |
17.5 |
13/16 |
20.6 |
7/8 |
22.2 |
7/8 |
22.2 |
1 1/4 |
31.8 |
1 1/4 |
31.8 |
1 3/4 |
44.5 |
||
D2 |
2 7/8 |
73 98 |
2 7/8 |
73 |
2 7/8 |
73 |
2 7/8 |
73 |
2 7/8 |
73 |
2 7/8 |
73 |
2 7/8 |
73 |
||
D1 |
3 7/8 |
4 |
4 1/2 |
114 |
4 1/2 |
114 |
4 1/2 |
114 |
4 7/8 |
124 |
4 7/8 |
124 |
5 3/4 |
146 |
||
n |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
||
d |
5/8 |
. 15.9 |
7/8 |
22.2 |
7/8 |
22.2 |
7/8 |
22.2 |
1 1/8 |
28.6 |
1 1/8 |
28.6 |
1 1/4 |
31.8 |
||
2 |
A |
6 |
152.4 |
6 1/2 |
165.1 |
6 1/2 |
165.1 |
6 1/2 |
165.1 |
8 1/2 |
215.9 |
8 1/2 |
215.9 |
9 1/4 |
234.9 |
|
b |
3/4 |
19 |
7/8 |
22.2 |
1 |
25.4 |
1 |
25.4 |
1 1/2 |
38.1 |
1 1/2 |
38.1 |
2 |
50.8 |
||
D2 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
3 5/8 |
92.1 |
||
D1 |
4 3/4 |
121 |
5 |
127 |
5 |
127 |
5 |
127 |
6 1/2 |
165.1 |
6 1/2 |
165.1 |
6 3/4 |
171 |
||
n |
4 |
4 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
||
d |
3/4 |
19 |
3/4 |
19 |
3/4 |
19 |
3/4 |
19 |
1 |
25.4 |
1 |
25.4 |
1 1/8 |
28.6 |
||
2 1/2 |
A |
7 |
177.8 |
7 1/2 |
190.5 |
7 1/2 |
190.5 |
7 1/2 |
190.5 |
9 5/8 |
244 |
9 5/8 |
244 |
10 1/2 |
266.7 |
|
b |
7/8 |
22.2 |
1 |
25.4 |
1 1/8 |
28.6 |
1 1/8 |
28.6 |
1 5/8 |
41.3 |
1 5/8 |
41.3 |
2 1/4 |
57.2 |
||
D2 |
4 1/8 |
104.8 |
4 1/8 |
104.8 |
4 1/8 |
104.8 |
4 1/8 |
104.8 |
4 1/8 |
105 |
4 1/8 |
105 |
4 1/8 |
105 |
||
D1 |
5 1/2 |
139.7 |
5 7/8 |
149.2 |
5 7/8 |
149.2 |
5 7/8 |
149.2 |
7 1/2 |
190.5 |
7 1/2 |
190.5 |
7 3/4 |
197 |
||
n |
4 |
4 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
||
d |
3/4 |
19 |
7/8 |
22.2 |
7/8 |
22.2 |
7/8 |
22.2 |
1 1/8 |
28.6 |
1 1/8 |
28.6 |
1 1/4 |
31.8 |
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