DIN 2527 Flange Dimensions

DIN 2527 Flange Dimensions

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NW		 D Flange k Raised Face Number Bolts Bolts Dia. of 
Bolt
Hole		 Weight of
One Flange
(7.85 kg/dm3)
b d4 f d2 Type-B
kg		 Type-C
kg
ND-6 10
15
20		 75
80
90		 12
12
14		 50
55
65		 35
40
50		 2
2
2		 4
4
4		 M10
M10
M10		 –
–
–		 11.5
11.5
11.5		 0.38
0.44
0.65		 0.33
0.38
0.59
25
32
40		 100
120
130		 14
14
14		 75
90
100		 60
70
80		 2
2
3		 4
4
4		 M10
M12
M12		 –
(1/2″)
(1/2″)		 11.5
14.0
14.0		 0.82
1.17
1.39		 0.74
1.07
1.21
50
65
80		 140
160
190		 14
14
16		 110
130
150		 90
110
128		 3
3
3		 4
4
4		 M12
M12
M16		 (1/2″)
(1/2″)
(3/8″)		 14
14
18		 1.62
2.44
3.43		 1.43
2.21
3.09
100
125
150		 210
240
265		 16
18
18		 170
200
225		 148
178
202		 3
3
3		 4
8
8		 M16
M16
M16		 (5/8″)
(5/8″)
(5/8″)		 18
18
18		 4.76
6.11
7.51		 4.37
5.68
7.02
(175)
200
250		 295
320
375		 20
20
22		 255
280
335		 232
258
312		 3
3
3		 8
8
12		 M16
M16
M16		 (5/8″)
(5/8″)
(5/8″)		 18
18
18		 10.4
12.3
18.3		 9.85
11.7
17.6
300
350
400
500		 440
490
540
645		 22
22
22
24		 395
445
495
600		 365
415
465
570		 4
4
4
4		 12
12
16
20		 M20
M20
M20
M20		 (3/4″)
(3/4″)
(3/4″)
(3/4″)		 23
23
23
23		 25.3
31.6
38.4
60.4		 24.0
30.1
36.4
58.1
ND-10
(Note from 10 mm to 175 mm see ND-16		 200
250
300		 340
395
445		 24
26
26		 295
350
400		 268
320
370		 3
3
4		 8
12
12		 M20
M20
M20		 (3/4″)
(3/4″)
(3/4″)		 23
23
23		 16.5
24.0
30.9		 15.6
23.1
29.4
350
400
500		 505
565
670		 26
26
28		 460
515
620		 430
482
585		 4
4
4		 16
16
20		 M20
M24
M24		 (3/4″)
(3/4″)
(3/4″)		 23
27
27		 40.6
49.4
75.0		 38.0
47.5
72.7
ND-16
Note : For DIN 2527 ND-10-4 Holes		 10
15
20		 90
95
105		 14
14
16		 60
65
75		 40
45
58		 2
2
2		 4
4
4		 M12
M12
M12		 (1/2″)
(1/2″)
(1/2″)		 14
14
14		 0.63
0.72
1.01		 0.56
0.64
0.93
25
32
40		 115
140
150		 14
14
16		 60
65
75		 40
45
58		 2
2
2		 4
4
4		 M12
M16
M16		 (1/2″)
(5/8″)
(5/8″)		 14
18
18		 1.23
1.80
2.09		 1.13
1.66
1.85
50
65
80		 165
185
200		 18
18
20		 125
145
160		 102
122
138		 3
3
3		 4
4
4/8		 M16
M16
M16		 (5/8″)
(5/8″)
(5/8″)		 18
18
18		 2.88
3.66
4.77		 2.59
3.33
4.34
100
125
150		 220
250
285		 20
22
22		 180
210
240		 158
188
212		 3
3
3		 8
8
8		 M16
M16
M16		 (5/8″)
(5/8″)
(5/8″)		 18
18
18		 2.88
3.66
4.77		 2.59
3.33
4.34
100
125
150		 220
250
285		 20
22
22		 180
210
240		 158
188
212		 3
3
3		 8
8
8		 M16
M16
M20		 (5/8″)
(5/8″)
(3/4″)		 18
18
23		 5.65
8.42
10.4		 5.26
7.67
9.85
(175)
200
250		 315
340
405		 24
24
26		 270
295
355		 242
268
320		 3
3
3		 8
12
12		 M20
M20
M20		 (3/4″) 
(3/4″) 
(7/8″)		 23
23
27		 14.0
16.1
24.9		 13.5
15.6
23.9
300
350
400		 460
520
580		 28
30
32		 410
470
525		 378
438
490		 4
4
4		 12
16
16		 M24
M24
M27		 (7/8″)
(7/8″)
(1″)		 27
27
30		 35.1
47.8
63.5		 33.6
46.2
61.5
500 715 34 650 610 4 20 M30 (1-1/8″) 33 102 99.5
ND-25
Note: From 10mm to 150 mm
see ND-40

 (175)
200
250		 330
360
425		 28
30
32		 280
310
370		 248
278
335		 3
3
3		 12
12
12		 M24
M24
M24		 (7/8″)
(7/8″)
(1″)		 27
27
30		 17.3
22.3
33.5		 16.5
21.5
32.5
300
350
400		 485
555
620		 34
38
40		 430
490
550		 395
450
505		 4
4
4		 16
16
16		 M27
M30
M33		 (1″)
(1-1/8″)
(1- 1/4″)		 30
33
36		 46.3
68.0
89.7		 44.7
65.9
87.0
500 730 44 660 615 4 20 M33 (1-1/4″) 36 138 134
ND-40 10
15
20		 90
95
105		 16
16
16		 60
65
75		 40
45
58		 2
2
2		 4
4
4

M12
M12
M12

 (1/2″)
(1/2″)
(1/2″)		 14
14
14		 0.72
0.81
1.24		 0.62
0.74
1.05
25
32
40		 115
140
150		 18
18
18		 85
100
110		 68
78
88		 2
2
2		 4
4
4		 M12
M12
M12		 (1/2″)
(5/8″)
(5/8″)		 14
18
18		 1.38
2.03
2.35		 1.31
1.82
2.11
50
65
80		 165
185
200		 20
22
24		 125
145
160		 102
122
138		 3
3
3		 4
8
8		 M16
M16
M16		 (5/8″) 
(5/8″) 
(5/8″)		 18
18
18		 3.20
4.29
5.88		 2.91
4.13
5.21
100
125
150		 235
270
300		 24
26
28		 190
220
250		 162
188
218		 3
3
3		 8
8
8		 M20
M24
M24		 (3/4″)
(7/8″) 
(7/8″)		 23
27
27		 7.54
10.8
14.5		 7.08
10.4
13.9
175
200
250		 350
375
450		 32
34
38		 295
320
385		 260
285
345		 3
3
3		 12
12
12		 M27
M27
M27		 (1″)
(1″)
(1-1/8″)		 30
30
30		 22.1
27.2
43.8		 21.3
26.2
43.1
300
350
400		 515
580
660		 42
46
50		 450
510
585		 410
465
535		 4
4
4		 16
16
16		 M30
M33
M36		 (1-1/8″)
(1-1/8″)
(1-1/8″)		 33
36
39		 63.3
89.5
127		 62.2
87.2
124
500 755 52 670 615 4 20 M39 (1-1/2″) 42 172 168

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