DIN Flange Dimensions

Diameters & Drilling of DIN Flanges
( mm )

**Nominal
Pipe Size
PN6 PN10 PN16 PN25 PN40

3/8" 75
50
4 x 11 90
60
4 x 14 90
60
4 x 14 90
60
4 x 14 90
60
4 x 14 O.D.
PCD
# of holes x diam. of holes

1/2" 80
55
4 x 11 95
65
4 x 14 95
65
4 x 14 95
65
4 x 14 95
65
4 x 14

3/4" 90
65
4 x 11 105
75
4 x 14 105
75
4 x 14 105
75
4 x 14 105
75
4 x 14

1" 100
75
4 x 11 115
85
4 x 14 115
85
4 x 14 115
85
4 x 14 115
85
4 x 14

1 1/4" 120
90
4 x 14 140
100
4 x 18 140
100
4 x 18 140
100
4 x 18 140
100
4 x 18

1 1/2" 130
100
4 x 14 150
110
4 x 18 150
110
4 x 18 150
110
4 x 18 150
110
4 x 18

2" 140
110
4 x 14 165
125
4 x 18 165
125
4 x 18 165
125
4 x 18 165
125
4 x 18

2 1/2" 160
130
4 x 14 185
145
4 x 18 185
145
4 x 18 185
145
8 x 18 185
145
8 x 18

3" 190
150
4 x 18 200
160
8 x 18 200
160
8 x 18 200
160
8 x 18 200
160
8 x 18

4" 210
170
4 x 18 220
180
8 x 18 220
180
8 x 18 235
190
8 x 22 235
190
8 x 22

5" 240
200
8 x 18 250
210
8 x 18 250
210
8 x 18 270
220
8 x 26 270
220
8 x 26

6" 265
225
8 x 18 285
240
8 x 22 285
240
8 x 22 300
250
8 x 26 300
250
8 x 26

7" 315
270
8 x 22 315
270
8 x 22 330
280
12 x 26 350
295
12 x 30

8" 320
280
8 x 18 340
295
8 x 22 340
295
12 x 22 360
310
12 x 26 375
320
12 x 30

10" 375
335
12 x 18 395
350
12 x 22 405
355
12 x 26 425
370
12 x 30 450
385
12 x 33

12" 440
395
12 x 22 445
400
12 x 22 460
410
12 x 26 485
430
16 x 30 515
450
16 x 33

14" 490
445
12 x 22 505
460
16 x 22 520
470
16 x 26 555
490
16 x 33 580
510
16 x 36

16" 540
495
16 x 22 565
515
16 x 26 580
525
16 x 30 620
550
16 x 36 660
585
16 x 39

20" 645
600
20 x 22 670
620
20 x 26 715
650
20 x 33 730
660
20 x 36 755
670
20 x 42

24" 755
705
20 x 24 780
725
20 x 27 840
770
20 x 33 845
770
20 x 36

O.D. = outside diameter PCD = bolt circle diameter PN = nominal pressure in bars
**Nominal Pipe Sizes as used in this table are NOT USA sizes, but are the BSP (British Standard Pipe sizes) which are similar to but NOT the same. Click here for a BSP/USA pipe O.D. comparison chart.
Note: (1 bar = 14.5 psi = 0.1 MPa = 100 KPa = 1.02 Kgf/cm²)

This page is also available in a format for downloading as a viewable/printable Acrobat [PDF] file. If you do not have the proper Acrobat Reader software, then follow the instructions below:
Download the free acrobat reader software from the: [Acrobat download page] Then use your back button to return to this page.

Phones: (800) 638-1830 or (410) 358-3130 are available Monday-Friday 8:30 AM to 5:30 PM Eastern time.
Faxes: (800) 872-9329 or (410) 358-3142 & E-mail are available anytime.
Warehouse & showroom hours are Monday-Friday 10 AM to 5:30 PM.
[ To: Maryland Metrics home page ] [ To: Maryland Metrics Product Guide ] [ e-mail to Maryland Metrics ]
Please note that all Trademarks and Tradenames are the property of their respective owners.
copyright 2000, 2002, 2004 maryland metrics -- all rights reserved -- ver [an error occurred while processing this directive]z15g flangedim.htm

**Nominal Pipe Size	PN6	PN10	PN16	PN25	PN40
3/8"	75 50 4 x 11	90 60 4 x 14	90 60 4 x 14	90 60 4 x 14	90 60 4 x 14	O.D. PCD # of holes x diam. of holes
1/2"	80 55 4 x 11	95 65 4 x 14	95 65 4 x 14	95 65 4 x 14	95 65 4 x 14
3/4"	90 65 4 x 11	105 75 4 x 14	105 75 4 x 14	105 75 4 x 14	105 75 4 x 14
1"	100 75 4 x 11	115 85 4 x 14	115 85 4 x 14	115 85 4 x 14	115 85 4 x 14
1 1/4"	120 90 4 x 14	140 100 4 x 18	140 100 4 x 18	140 100 4 x 18	140 100 4 x 18
1 1/2"	130 100 4 x 14	150 110 4 x 18	150 110 4 x 18	150 110 4 x 18	150 110 4 x 18
2"	140 110 4 x 14	165 125 4 x 18	165 125 4 x 18	165 125 4 x 18	165 125 4 x 18
2 1/2"	160 130 4 x 14	185 145 4 x 18	185 145 4 x 18	185 145 8 x 18	185 145 8 x 18
3"	190 150 4 x 18	200 160 8 x 18	200 160 8 x 18	200 160 8 x 18	200 160 8 x 18
4"	210 170 4 x 18	220 180 8 x 18	220 180 8 x 18	235 190 8 x 22	235 190 8 x 22
5"	240 200 8 x 18	250 210 8 x 18	250 210 8 x 18	270 220 8 x 26	270 220 8 x 26
6"	265 225 8 x 18	285 240 8 x 22	285 240 8 x 22	300 250 8 x 26	300 250 8 x 26
7"		315 270 8 x 22	315 270 8 x 22	330 280 12 x 26	350 295 12 x 30
8"	320 280 8 x 18	340 295 8 x 22	340 295 12 x 22	360 310 12 x 26	375 320 12 x 30
10"	375 335 12 x 18	395 350 12 x 22	405 355 12 x 26	425 370 12 x 30	450 385 12 x 33
12"	440 395 12 x 22	445 400 12 x 22	460 410 12 x 26	485 430 16 x 30	515 450 16 x 33
14"	490 445 12 x 22	505 460 16 x 22	520 470 16 x 26	555 490 16 x 33	580 510 16 x 36
16"	540 495 16 x 22	565 515 16 x 26	580 525 16 x 30	620 550 16 x 36	660 585 16 x 39
20"	645 600 20 x 22	670 620 20 x 26	715 650 20 x 33	730 660 20 x 36	755 670 20 x 42
24"	755 705 20 x 24	780 725 20 x 27	840 770 20 x 33	845 770 20 x 36