Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
150
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16
18
20
24
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
4
4
4
4
4
4
4
4
8
8
8
8
8
12
12
12
16
16
20
20
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
1
1.12
1.12
1.25
1.25
1.38
1/2
1/2
1/2
1/2
1/2
5/8
5/8
5/8
5/8
5/8
3/4
3/4
3/4
7/8
7/8
1
1
1 1/8
1 1/8
1 1/4
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
150
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.1
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
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
20.2
24.25
TH
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
2.38
2.75
3.12
3.5
3.88
4.75
5.5
6
7
7.5
8.5
9.5
11.75
14.25
17
18.75
21.25
22.75
25
29.5
1.38
1.69
2.0
2.5
2.88
3.62
4.12
5
5.5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
Bore Corner
Radius
Thread length
Socket Depth
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
TH
.62
.62
.69
.81
.88
1
1.12
1.19
1.25
1.31
1.44
1.56
1.75
1.94
2.19
2.25
2.5
2.69
2.88
3.25
SW
.38
.44
.5
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
2.5
1.19
1.5
1.94
2.31
2.56
3.06
3.56
4.25
4.81
5.31
6.44
7.56
9.69
12
14.38
15.75
18
19.88
22
26.12
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
Length Through Hub***
SO,TH,SW, LJ
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
WN
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
Weight
BLIND
2.00
2.00
2
3
3
4
7
9
13
17
20
27
47
67
123
139
187
217
283
415
LJ
1.00
2.00
2
3
3
5
8
9
11
13
15
19
30
43
64
105
140
160
195
275
SO, SW, TH
1.00
2.00
2
3
3
5
8
9
11
13
15
19
30
43
64
90
106
130
165
220
WN
2.00
2.00
3
3
4
6
8
10
12
15
19
24
39
52
80
110
140
150
180
260
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
300
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16
18
20
24
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
4
4
4
4
4
8
8
8
8
8
8
12
12
16
16
20
20
24
24
24
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
1.12
1.25
1.25
1.38
1.38
1.38
1.62
1/2
5/8
5/8
5/8
3/4
5/8
3/4
3/4
3/4
3/4
3/4
3/4
7/8
1
1 1/8
1 1/8
1 1/4
1 1/4
1 1/4
1 1/2
TH
.93
1.14
1.41
1.75
1.99
2.5
3
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
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
300
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.1
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
0.88
1.09
1.36
1.7
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
20.2
24.25
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
2.62
3.25
3.5
3.88
4.5
5
5.88
6.62
7.25
7.88
9.25
10.62
13
15.25
17.75
20.25
22.5
24.75
27
32
1.38
1.69
2
2.5
2.88
3.62
4.12
5
5.5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
Bore Corner
Radius
Thread length
Socket Depth
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
TH
.62
.62
.69
.81
.88
1
1.12
1.19
1.25
1.31
1.44
1.56
1.75
1.94
2.19
2.25
2.5
2.69
2.88
3.25
SW
.38
.44
.5
0.56
0.62
0.69
0.75
0.81
1.5
1.88
2.12
2.5
2.75
3.31
3.94
4.62
5.25
5.75
7
8.12
10.25
12.62
14.75
16.75
19
21
23.12
27.62
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
Length Through Hub***
SO,TH,SW, LJ
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
WN
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
Weight
BLIND
2
3
4
6
7
8
12
16
21
28
37
48
79
122
183
241
315
414
515
800
LJ
2
3
3
5
7
7
10
15
17
24
28
39
58
91
140
190
234
305
375
550
SO, SW, TH
2
3
3
5
7
7
10
13
16
24
29
36
56
77
113
159
210
253
307
490
WN
2
3
4
5
7
9
12
15
18
25
32
42
67
91
140
180
250
320
400
580
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
400
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16
18
20
24
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
4
4
4
4
4
8
8
8
8
8
8
12
12
16
16
20
20
24
24
24
0.62
0.75
0.75
0.75
0.88
0.75
0.88
0.88
1
1
1
1
1.12
1.25
1.38
1.38
1.5
1.5
1.62
1.88
1/2
5/8
5/8
5/8
3/4
5/8
3/4
3/4
7/8
7/8
7/8
7/8
1
1 1/8
1 1/4
1 1/4
1 3/8
1 3/8
1 1/2
1 3/4
TH
.93
1.14
1.41
1.75
1.99
2.5
3
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
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
400
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.1
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
0.88
1.09
1.36
1.7
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
20.2
24.25
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
2.62
3.25
3.5
3.88
4.5
5
5.88
6.62
7.25
7.88
9.25
10.62
13
15.25
17.75
20.25
22.5
24.75
27
32
1.38
1.69
2
2.5
2.88
3.62
4.12
5
5.5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Bore Corner
Radius
Thread length
Socket Depth
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
TH
.62
.62
.69
.81
.88
1.12
1.25
1.38
1.56
1.44
1.69
1.81
2
2.19
2.38
2.5
2.69
2.75
2.88
3.25
SW
.38
.44
.5
0.56
0.62
0.69
0.75
0.81
1.5
1.88
2.12
2.5
2.75
3.31
3.94
4.62
5.25
5.75
7
8.12
10.25
12.62
14.75
16.75
19
21
23.12
27.62
0.56
0.62
0.69
0.81
0.88
1.00
1.12
1.25
1.38
1.38
1.50
1.62
1.88
2.12
2.25
2.38
2.50
2.62
2.75
3.00
Length Through Hub***
SO,TH,SW, LJ
0.88
1.00
1.06
1.12
1.25
1.44
1.62
1.81
1.94
2.00
2.12
2.25
2.69
2.88
3.12
3.31
3.69
3.88
4.00
4.50
WN
2.06
2.25
2.44
2.62
2.75
2.88
3.12
3.25
3.38
3.50
4.00
4.06
4.62
4.88
5.38
5.88
6.00
6.50
6.62
6.88
Weight
BLIND
2
3
4
6
8
10
15
20
29
33
44
61
100
155
226
310
398
502
621
936
LJ
2
3
4
5
7
8
11
14
20
25
29
42
64
110
152
210
280
345
420
615
SO, SW, TH
2
3
4
5
7
8
12
15
21
24
31
39
63
91
129
191
253
310
378
539
WN
2
4
4
6
8
12
18
23
26
35
43
57
89
125
175
230
295
350
425
620
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
600
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16
18
20
24
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
4
4
4
4
4
8
8
8
8
8
8
12
12
16
20
20
20
20
24
24
0.62
0.75
0.75
0.75
0.88
0.75
0.88
0.88
1
1
1.12
1.12
1.25
1.38
1.38
1.5
1.62
1.75
1.75
2
1/2
5/8
5/8
5/8
3/4
5/8
3/4
3/4
7/8
7/8
1
1
1 1/8
1 1/4
1 1/4
1 3/8
1 1/2
1 5/8
1 5/8
1 7/8
TH
.93
1.14
1.41
1.75
1.99
2.5
3
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
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
600
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.1
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
0.88
1.09
1.36
1.7
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
20.2
24.25
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
2.62
3.25
3.5
3.88
4.5
5
5.88
6.62
7.25
8.5
10.5
11.5
13.75
17
19.25
20.75
23.75
25.75
28.5
33
1.38
1.69
2
2.5
2.88
3.62
4.12
5
5.5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Bore Corner
Radius
Thread length
Socket Depth
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
TH
.62
.62
.69
.81
.88
1.12
1.25
1.38
1.56
1.62
1.88
2
2.25
2.56
2.75
2.88
3.06
3.12
3.25
3.62
SW
.38
.44
.5
0.56
0.62
0.69
0.75
0.81
1.5
1.88
2.12
2.5
2.75
3.31
3.94
4.62
5.25
6
7.44
8.75
10.75
13.5
15.75
17
19.5
21.5
24
28.25
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
Length Through Hub***
SO,TH,SW, LJ
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
WN
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
Weight
BLIND
2
3
4
6
8
10
15
20
29
41
68
86
139
231
295
378
527
665
855
1175
LJ
2
3
4
5
7
9
12
15
20
36
63
78
112
195
240
290
400
469
604
866
SO, SW, TH
2
3
4
5
7
8
12
15
21
33
63
80
97
177
215
259
366
476
612
876
WN
2
4
4
6
8
12
18
23
26
42
68
81
120
190
225
280
390
475
590
830
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
900
1/2
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
4.75
5.12
5.88
6.25
7.00
8.50
9.62
9.50
11.50
13.75
15.00
18.50
21.50
24.00
25.25
27.75
31.00
33.75
41.00
4
4
4
4
4
8
8
8
8
8
12
12
16
20
20
20
20
20
20
0.88
0.88
1
1
1.12
1
1.12
1
1.25
1.38
1.25
1.5
1.5
1.5
1.62
1.75
2
2.12
2.62
3/4
3/4
7/8
7/8
1
7/8
1
7/8
1 1/8
1 1/4
1 1/8
1 3/8
1 3/8
1 3/8
1 1/2
1 5/8
1 7/8
2
2 1/2
TH
.93
1.14
1.41
1.75
1.99
2.5
3
3.63
4.63
5.69
6.75
8.75
10.88
12.94
14.19
16.19
18.19
20.19
24.19
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
900
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
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
20.2
24.25
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
3.25
3.5
4
4.38
4.88
6.5
7.5
7.5
9.25
11
12.5
15.5
18.5
21
22
24.25
27
29.5
35.5
1.38
1.69
2
2.5
2.88
3.62
4.12
5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Bore Corner
Radius
Thread length
Socket Depth
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
TH
.88
1
1.12
1.19
1.25
1.5
1.88
1.62
1.88
2.12
2.25
2.5
2.81
3
3.25
3.38
3.5
3.62
4
SW
1.5
1.75
2.06
2.5
2.75
4.12
4.88
5
6.25
7.5
9.25
11.75
14.5
16.5
17.75
20
22.25
24.5
29.5
0.88
1.00
1.12
1.12
1.25
1.50
1.62
1.50
1.75
2.00
2.19
2.50
2.75
3.12
3.38
3.50
4.00
4.25
5.50
Length Through Hub***
SO,TH,SW, LJ
1.25
1.38
1.63
1.63
1.75
2.25
2.50
2.13
2.75
3.13
3.38
4.00
4.25
4.63
5.13
5.25
6.00
6.25
8.00
WN
2.38
2.75
2.88
2.88
3.25
4.00
4.12
4.00
4.50
5.00
5.50
6.38
7.25
7.88
8.38
8.50
9.00
9.75
11.50
Weight
BLIND
4
6
9
10
14
25
35
32
54
87
113
197
290
413
494
619
880
1107
2099
LJ
6
6
8
10
14
21
25
29
51
81
105
190
277
371
415
488
670
868
1659
SO, SW, TH
6
6
8
10
14
22
36
31
53
83
108
172
245
326
380
459
647
792
1480
WN
5
6
9
10
13
25
36
31
53
86
110
175
260
325
400
495
680
830
1500
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
1500
1/2
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
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
4
4
4
4
4
8
8
8
8
8
12
12
12
16
16
16
16
16
16
0.88
0.88
1
1
1.12
1
1.12
1.25
1.38
1.62
1.5
1.75
2
2.12
2.38
2.62
2.88
3.12
3.62
3/4
3/4
7/8
7/8
1
7/8
1
1 1/8
1 1/4
1 1/2
1 3/8
1 5/8
1 7/8
2
2 1/4
2 1/2
2 3/4
3
3 1/2
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
1500
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.6
5.69
6.75
8.75
10.92
12.92
14.19
16.19
18.2
20.25
24.25
SO & SW
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
TH
.93
1.14
1.41
1.75
1.99
2.5
3
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4.5
5.56
6.63
8.63
10.75
12.75
14
16
18
20
24
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
3.25
3.5
4
4.38
4.88
6.5
7.5
8
9.5
11.5
12.5
15.50
19
22.5
25
27.75
30.5
32.75
39
1.38
1.69
2
2.5
2.88
3.62
4.12
5
6.19
7.31
8.5
10.62
12.75
15
16.25
18.5
21
23
27.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Bore Corner
Radius
Thread length
Socket Depth
TH
.88
1
1.12
1.19
1.25
1.5
1.88
SW
.38
.44
.5
0.56
0.62
0.69
0.75
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.44
.44
.5
.5
.5
.5
.5
.5
.5
.5
.5
1.5
1.75
2.06
2.5
2.75
4.12
4.88
5.25
6.38
7.75
9
11.5
14.5
17.75
19.5
21.75
23.5
25.25
30
0.88
1.00
1.12
1.12
1.25
1.50
1.62
1.88
2.12
2.88
3.25
3.62
4.25
4.88
5.25
5.75
6.38
7.00
8.00
Length Through Hub***
SO,TH,SW, LJ
1.25
1.38
1.63
1.63
1.75
2.25
2.50
2.88
3.56
4.13
4.69
5.63
7.00
8.63
9.50
10.25
10.88
11.50
13.00
WN
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
Weight
BLIND
4
6
9
10
14
25
35
48
73
142
159
302
507
775
975
1300
1750
2225
3625
LJ
6
6
8
10
14
25
35
47
75
140
170
286
485
749
890
1250
1475
1775
2825
SO, SW, TH
6
6
8
10
14
22
36
48
73
132
164
258
436
667
WN
5
6
9
10
13
25
36
48
73
130
165
275
455
690
940
1250
1625
2050
3325
Class
Nominal Size
Outside
Diameter of
Flange
No. of Holes
Diameter of
Holes
Diameter of
Bolts
2500
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
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
4
4
4
4
4
8
8
8
8
8
8
12
12
12
0.88
0.88
1
1.12
1.25
1.12
1.25
1.38
1.62
1.88
2.12
2.12
2.62
2.88
3/4
3/4
7/8
1
1 1/8
1
1 1/8
1 1/4
1 1/2
1 3/4
2
2
2 1/2
2 3/4
Diameter of Bolt
Circle
Diameter of
Raised Face*
Height of Raised Diameter of Hub
Face*
at Base**
Thickness of
Flange***
ALL TYPES
Bore Diameter
Class
2500
Purchaser to Specify
WN, SW
LJ
.9
1.11
1.38
1.72
1.97
2.46
2.97
3.6
4.6
5.69
6.75
8.75
10.92
12.92
SO & SW
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
TH
.93
1.14
1.41
1.75
1.99
2.5
3
Diameter of Hub
at Point of
Welding
WN
0.84
1.05
1.32
1.66
1.9
2.38
2.88
3.5
4.5
5.56
6.63
8.63
10.75
12.75
*Lap joint flanges do not have a raised face
**Blind flanges do not have a hub
***Includes 1/16" raised face for 150# and 300# flanges, but not 1/4" raised face for classes 400# and up.
***Dimensions are for industry standard lap joints and not "true" lap joints
3.5
3.75
4.25
5.12
5.75
6.75
7.75
9
10.75
12.75
14.5
17.25
21.25
24.38
1.38
1.69
2
2.5
2.88
3.62
4.12
5
6.19
7.31
8.5
10.62
12.75
15
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Bore Corner
Radius
Thread length
Socket Depth
TH
1.12
1.25
1.38
1.5
1.75
2
2.25
SW
LJ
.12
.12
.12
.19
.25
.31
.31
.38
.44
.44
.5
.5
.5
.5
1.69
2
2.25
2.88
3.12
3.75
4.5
5.25
6.5
8
9.25
12
14.75
17.38
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
Length Through Hub***
SO,TH,SW, LJ
1.56
1.69
1.88
2.06
2.38
2.75
3.13
3.63
4.25
5.13
6.00
7.00
9.00
10.00
WN
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
Weight
BLIND
8
9
13
20
28
42
52
94
146
244
378
576
1068
1608
LJ
7
8
12
17
24
37
53
80
122
204
314
471
897
1262
SO, SW, TH
7
9
12
18
25
38
55
83
127
210
323
485
925
1300
WN
7
8
12
17
25
42
52
94
145
245
380
580
1075
1525