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Slip on Flange Dimensions – Class 150 to Class 1500
Slip on flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47.
During dimensional inspection of flange, you should check for
Outer & Inner Diameter of body
Bolt Circle & Bolt Hole Diameter
Length of the Hub
Straightness and alignment of the bolt hole
Class 150 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
Machine Bolt Length
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
90
9.6
30
14
34.9
2
60.3
22.2
4
1/2
50
55
5/8
M14
0.8
3/4
20
100
11.2
38
14
42.9
2
69.9
27.7
4
1/2
50
65
5/8
M14
0.9
1
25
110
12.7
49
16
50.8
2
79.4
34.5
4
1/2
55
65
5/8
M14
0.9
1 1/4
32
115
14.3
59
19
63.5
2
88.9
43.2
4
1/2
55
70
5/8
M14
1.4
1 1/2
40
125
15.9
65
21
73
2
98.4
49.5
4
1/2
65
70
5/8
M14
1.4
2
50
150
17.5
78
24
92.1
2
120.7
61.9
4
5/8
70
85
3/4
M16
2.3
2 1/2
65
180
20.7
90
27
104.8
2
139.7
74.6
4
5/8
75
90
3/4
M16
3.2
3
80
190
22.3
108
29
127
2
152.4
90.7
4
5/8
75
90
3/4
M16
3.7
3 1/2
90
215
22.3
122
30
139.7
2
177.8
103.4
8
5/8
75
90
3/4
M16
5
4
100
230
22.3
135
32
157.2
2
190.5
116.1
8
5/8
75
90
3/4
M16
5.9
5
125
255
22.3
164
35
185.7
2
215.9
143.8
8
3/4
85
95
7/8
M20
6.8
6
150
280
23.9
192
38
215.9
2
241.3
170.7
8
3/4
85
100
7/8
M20
8.6
8
200
345
27
246
43
269.9
2
298.5
221.5
8
3/4
90
110
7/8
M20
13.7
10
250
405
28.6
305
48
323.8
2
362
276.2
12
7/8
100
115
1
M24
19.5
12
300
485
30.2
365
54
381
2
431.8
327
12
7/8
100
120
1
M24
29
14
350
535
33.4
400
56
412.8
2
476.3
359.2
12
1
115
135
1 1/8
M27
41
16
400
595
35
457
62
469.9
2
539.8
410.5
16
1
115
135
1 1/8
M27
54
18
450
635
38.1
505
67
533.4
2
577.9
461.8
16
1 1/8
125
145
1 1/4
M30
59
20
500
700
41.3
559
71
584.2
2
635
513.1
20
1 1/8
140
160
1 1/4
M30
75
24
600
815
46.1
663
81
692.2
2
749.3
616
20
1 1/4
150
170
1 3/8
M33
100
Class 300 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
Machine Bolt Length
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
95
12.7
38
21
34.9
2
66.7
22.2
4
1/2
55
65
5/8
M14
1.2
3/4
20
115
14.3
48
24
42.9
2
82.6
27.7
4
5/8
65
75
3/4
M16
1.4
1
25
125
15.9
54
25
50.8
2
88.9
34.5
4
5/8
65
75
3/4
M16
1.4
1 1/4
32
135
17.5
64
25
63.5
2
98.4
43.2
4
5/8
70
85
3/4
M16
1.8
1 1/2
40
155
19.1
70
29
73
2
114.3
49.5
4
3/4
75
90
7/8
M20
2.7
2
50
165
20.7
84
32
92.1
2
127
61.9
8
5/8
75
90
3/4
M16
3.2
2 1/2
65
190
23.9
100
37
104.8
2
149.2
74.6
8
3/4
85
100
7/8
M20
4.6
3
80
210
27
117
41
127
2
168.3
90.7
8
3/4
90
110
7/8
M20
5.9
3 1/2
90
230
28.6
133
43
139.7
2
184.2
103.4
8
3/4
95
110
7/8
M20
7.7
4
100
255
30.2
146
46
157.2
2
200
116.8
8
3/4
95
115
7/8
M20
10
5
125
280
33.4
178
49
185.7
2
235
144.4
8
3/4
110
120
7/8
M20
12.7
6
150
320
35
206
51
215.9
2
269.9
171.4
12
3/4
110
120
7/8
M20
17.7
8
200
380
39.7
260
60
269.9
2
330.2
222.2
12
7/8
120
140
1
M24
26
10
250
445
46.1
321
65
323.8
2
387.4
277.4
16
1
140
160
1 1/8
M27
36
12
300
520
49.3
375
71
381
2
450.8
328.2
16
1 1/8
145
170
1 1/4
M30
52
14
350
585
52.4
425
75
412.8
2
514.4
360.2
20
1 1/8
160
180
1 1/4
M30
75
16
400
650
55.6
483
81
469.9
2
571.5
411.2
20
1 1/4
165
190
1 3/8
M33
86
18
450
710
58.8
533
87
533.4
2
628.6
462.3
24
1 1/4
170
195
1 3/8
M33
113
20
500
775
62
587
94
584.2
2
685.8
514.4
24
1 1/4
185
205
1 3/8
M33
143
24
600
915
68.3
702
105
692.2
2
812.8
616
24
1 1/2
205
230
1 5/8
M39
216
Class 400 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thickness
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
95
14.3
38
22
34.9
7
66.7
22.2
4
1/2
75
5/8
M14
1.3
3/4
20
115
15.9
48
25
42.9
7
82.6
27.7
4
5/8
90
3/4
M16
1.5
1
25
125
17.5
54
27
50.8
7
88.9
34.5
4
5/8
90
3/4
M16
1.8
1 1/4
32
135
20.7
64
29
63.5
7
98.4
43.2
4
5/8
95
3/4
M16
2.3
1 1/2
40
155
22.3
70
32
73
7
114.3
49.5
4
3/4
110
7/8
M20
3.2
2
50
165
25.4
84
37
92.1
7
127
61.9
8
5/8
110
3/4
M16
4.1
2 1/2
65
190
28.6
100
41
104.8
7
149.2
74.6
8
3/4
120
7/8
M20
5.9
3
80
210
31.8
117
46
127
7
168.3
90.7
8
3/4
125
7/8
M20
7.3
4
100
255
35
146
51
157.2
7
200
116.1
8
7/8
140
1
M24
11.8
5
125
280
38.1
178
54
185.7
7
235
143.8
8
7/8
145
1
M24
14.1
6
150
320
41.3
206
57
215.9
7
269.9
170.7
12
7/8
150
1
M24
20
8
200
380
47.7
260
68
269.9
7
330
221.5
12
1
170
1 1/8
M27
31
10
250
445
54
321
73
323.8
7
387.4
276.2
16
1 1/8
190
1 1/4
M30
42
12
300
520
57.2
375
79
381
7
450.8
327
16
1 1/4
205
1 3/8
M33
59
14
350
585
60.4
425
84
412.8
7
514.4
359.2
20
1 1/4
210
1 3/8
M33
82
16
400
650
63.5
483
94
469.9
7
571.5
410.5
20
1 3/8
220
1 1/2
M36
107
18
450
710
66.7
533
98
533.4
7
628.6
461.8
24
1 3/8
230
1 1/2
M36
130
20
500
775
69.9
587
102
584.2
7
685.8
513.1
24
1 1/2
240
1 3/4
M39
157
24
600
915
76.2
702
114
692.2
7
812.8
616
24
1 3/4
265
1 7/8
M45
232
Class 600 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thickness
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
95
14.3
38
22
34.9
7
66.7
22.2
4
1/2
75
5/8
M14
1.3
3/4
20
115
15.9
48
25
42.9
7
82.6
27.7
4
5/8
90
3/4
M16
1.4
1
25
125
17.5
54
27
50.8
7
88.9
34.5
4
5/8
90
3/4
M16
1.8
1 1/4
32
135
20.7
64
29
63.5
7
98.4
43.2
4
5/8
95
3/4
M16
2.3
1 1/2
40
155
22.3
70
32
73
7
114.3
49.5
4
3/4
110
7/8
M20
3.2
2
50
165
25.4
84
37
92.1
7
127
61.9
8
5/8
110
3/4
M16
4.1
2 1/2
65
190
28.6
100
41
104.8
7
149.2
74.6
8
3/4
120
7/8
M20
5.9
3
80
210
31.8
117
46
127
7
168.3
90.7
8
3/4
125
7/8
M20
7.3
4
100
275
38.1
152
54
157.2
7
215.9
116.1
8
7/8
145
1
M24
16.8
5
125
330
44.5
189
60
185.7
7
266.7
143.8
8
1
165
1 1/8
M27
29
6
150
355
47.7
222
67
215.9
7
292.1
170.7
12
1
170
1 1/8
M27
36
8
200
420
55.6
273
76
269.9
7
349.2
221.5
12
1 1/8
190
1 1/4
M30
52
10
250
510
63.5
343
86
323.8
7
431.8
276.2
16
1 1/4
215
1 3/8
M33
77
12
300
560
66.7
400
92
381
7
489
327
20
1 1/4
220
1 3/8
M33
91
14
350
605
69.9
432
94
412.8
7
527
359.2
20
1 3/8
235
1 1/2
M36
105
16
400
685
76.2
495
106
469.9
7
603.2
410.5
20
1 1/2
255
1 5/8
M39
150
18
450
745
82.6
546
117
533.4
7
654
461.8
20
1 5/8
275
1 3/4
M42
182
20
500
815
88.9
610
127
584.2
7
723.9
513.1
24
1 5/8
285
1 3/4
M42
232
24
600
940
101.6
718
140
692.2
7
838.2
616
24
1 7/8
330
2
M48
332
Class 900 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thickness
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
120
22.3
38
32
34.9
7
82.6
22.2
4
3/4
110
7/8
M20
1.8
3/4
20
130
25.4
44
35
42.9
7
88.9
27.7
4
3/4
115
7/8
M20
2.3
1
25
150
28.6
52
41
50.8
7
101.6
34.5
4
7/8
125
1
M24
3.6
1 1/4
32
160
28.6
64
41
63.5
7
111.1
43.2
4
7/8
125
1
M24
4.1
1 1/2
40
180
31.8
70
44
73
7
123.8
49.5
4
1
140
1 1/8
M27
5.5
2
50
215
38.1
105
57
92.1
7
165.1
61.9
8
7/8
145
1
M24
11.5
2 1/2
65
245
41.3
124
64
104.8
7
190.5
74.6
8
1
160
1 1/8
M27
16.5
3
80
240
38.1
127
54
127
7
190.5
90.7
8
7/8
145
1
M24
12
4
100
290
44.5
159
70
157.2
7
235
116.1
8
1 1/8
170
1 1/4
M30
24
5
125
350
50.8
190
79
185.7
7
279.4
143.8
8
1 1/4
190
1 3/8
M33
38
6
150
380
55.6
235
86
215.9
7
317.5
170.7
12
1 1/8
190
1 1/4
M30
50
8
200
470
63.5
298
102
269.9
7
393.7
221.5
12
1 3/8
220
1 1/2
M36
78
10
250
545
69.9
368
108
323.8
7
469.9
276.2
16
1 3/8
235
1 1/2
M36
112
12
300
610
79.4
419
117
381
7
533.4
327
20
1 3/8
255
1 1/2
M36
148
14
350
640
85.8
451
130
412.8
7
558.8
359.2
20
1 1/2
275
1 5/8
M39
182
16
400
705
88.9
508
133
469.9
7
616
410.5
20
1 5/8
285
1 3/4
M42
193
18
450
785
101.6
565
152
533.4
7
685.8
461.8
20
1 7/8
325
2
M48
258
20
500
855
108
622
159
584.2
7
749.3
513.1
20
2
350
2 1/8
M52
317
24
600
1040
139.7
749
203
692.2
7
901.7
616
20
2 1/2
440
2 5/8
M64
608
Class 1500 Slip-on Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thickness
Hub OD
Flange Length
RF Dia.
RF Height
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
1/2
15
120
22.3
38
32
34.9
7
82.6
22.2
4
3/4
110
7/8
M20
1.8
3/4
20
130
25.4
44
35
42.9
7
88.9
27.7
4
3/4
115
7/8
M20
2.3
1
25
150
28.6
52
41
50.8
7
101.6
34.5
4
7/8
125
1
M24
3.7
1 1/4
32
160
28.6
64
41
63.5
7
111.1
43.2
4
7/8
125
1
M24
4.1
1 1/2
40
180
31.8
70
44
73
7
123.8
49.5
4
1
140
1 1/8
M27
5.5
2
50
215
38.1
105
57
92.1
7
165.1
61.9
8
7/8
145
1
M24
9.8
2 1/2
65
245
41.3
124
64
104.8
7
190.5
74.6
8
1
160
1 1/8
M27
16.4
Disclaimer – Please check with ASME B16.5 Before using.
