British Standard BS4504
British Standard BS4504
This diagram illustrates the arrangement but not necessarily the correct number of bolt holes.
Refer to the column Bolting Number for the actual number.
Note:Dimension N1 N2 are measured at the intersection of the projections of the hub draft angle and the back face of the flange.
DIMENSIONS OF PN16 FLANGES
Nominal | Mating dimensions | Outside Diameter of neck A | Bore Diameters | Flange thickness | Diameter of shoulder G | Lengths | Neck diameters | Radius R | Neck thick-ness S | Nominal size DN | |||||||||
Outside Diameter D | Diameter of bolt circle K | Diameter of bolt hole L | Bolting | ||||||||||||||||
Num- | Size | B1 | C1 | C2 | C3 | H1 | H2 | H3 | N1 | N2 | |||||||||
Codes affected | 101,105,111,112,113 | 111 | 101 112 | 101 | 111 112 113 | 105 | 105 | 112 113 | 111 | 111 | 111 | 112 113 | 111 112 113 | 111 | |||||
| mm 90 95 105 115 140 150 165 185 200 220 250 285 340 405 450 520 580 640 715 840 910 1025 1125 1255 1485 1685 1930 2130 2345 | mm 60 65 75 85 100 110 125 145 160 180 210 240 295 355 410 470 525 585 850 770 840 950 1050 1170 1390 1590 1820 2020 2230 | mm |
| M12 M12 M12 M12 M12 M16 M16 M16 M16 M16 M16 M20 M20 M24 M24 M24 M27 M27 M30 M33 M33 M36 M36 M39 M45 M45 M52 M52 M56 | mm 17.2 21.3 26.9 33.7 42.4 48.3 60.3 76.1 88.96 114.3 139.7 168.3 219.1 273.0 323.9 355.6 406.4 457.0 508.0 610.0 711.0 813.0 914.0 1016.0 1220.0 1420.0 1620.0 1820.0 2020.0 | mm 18.0 22.0 27.5 34.5 43.5 49.5 61.5 77.5 90.5 116.0 141.5 170.5 221.5 278.5 327.5 359.0 411.0 462.0 513.5 616.5 - - - - - - - - - | mm | mm 14 14 16 16 16 16 18 18 20 20 22 22 24 26 28 30 32 34 34 36 36 38 40 42 48 52 58 62 86 | mm 14 14 16 16 16 16 18 18 20 20 22 22 24 26 28 30 32 36 36 44 48 52 58 64 76 - - - - | mm - - - - - - - 55 70 90 115 140 190 235 285 325 372 425 475 575 670 770 860 960 1160 - - - - | mm | mm | mm 6 6 6 6 6 7 8 10 10 12 12 12 16 16 18 16 16 18 16 18 18 20 20 22 30 30 35 35 40 | mm | mm | mm 3 3 4 4 5 5 5 6 6 6 6 8 8 10 10 10 10 12 12 12 12 12 12 12 12 12 12 15 15 | mm 1.8 2.0 2.3 2.6 2.6 2.6 2.9 2.9 3.2 3.6 4.0 4.5 5.6 6.3 7.1 8.0 8.0 8.0 8.0 8.8 8.8 10.0 10.0 10.0 12.5 14.2 16.0 17.5 20.0 | 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 1800 2000 |
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