Flanges : Bolt Dimensions

BS 4504 / BS EN 1092-1

Nominal BoreTABLE 6TABLE 10TABLE 16TABLE 25TABLE 40
10 mm4 M10 X 454 M12 X 504 M12 X 504 M12 X 554 M12 X 55
15 mm4 M10 X 454 M12 X 504 M12 X 504 M12 X 554 M12 X 55
20 mm4 M10 X 454 M12 X 554 M12 X 554 M12 X 554 M12 X 55
25 mm4 M10 X 504 M12 X 554 M12 X 554 M12 X 654 M12 X 65
32 mm4 M12 X 654 M16 X 654 M16 X 654 M16 X 654 M16 X 65
40 mm4 M12 X 654 M16 X 654 M16 X 654 M16 X 754 M16 X 75
50 mm4 M12 X 654 M16 X 654 M16 X 654 M16 X 754 M16 X 75
65 mm4 M12 X 654 M16 X 654 M16 X 658 M16 X 758 M16 X 75
80 mm4 M16 X 658 M16 X 758 M16 X 758 M16 X 758 M16 X 75
100 mm4 M16 X 658 M16 X 758 M16 X 758 M20 X 908 M20 X 90
125 mm8 M16 X 758 M16 X 758 M16 X 758 M24 X 908 M24 X 90
150 mm8 M16 X 758 M20 X 758 M20 X 758 M24 X 1008 M24 X 100
200 mm8 M16 X 758 M20 X 9012 M20 X 9012 M24 X 9012 M27 X 115*
250 mm12 M16 X 7512 M20 X 9012 M24 X 9012 M27 X 115*- -
300 mm12 M20 X 9012 M20 X 9012 M24 X 9016 M27 X 115*12 M30 X 140
350 mm12 M20 X 9016 M20 X 9016 M24 X 10016 M30 X 14016 M30 X 140
400 mm16 M20 X 9016 M24 X 10016 M27 X 115*16 M33 X 140*16 M33 X 165*
450 mm16 M20 X 9020 M24 X 11520 M30 X 14020 M33 X 15516 M36 X 180
500 mm20 M20 X 9020 M24 X 11020 M27 X 12520 M33 X 165*20 M36 X 180
600 mm20 M24 X 10020 M27 X 125*20 M33 X 150*24 M36 X 18020 M39 X 200*

ANSI – 16,5 ASA

Nominal BoreCLASS 150lbCLASS 300lb
15 mm4 M12 X 454 M12 X 55
20 mm4 M12 X 504 M16 X 65
25 mm4 M12 X 554 M16 X 65
32 mm4 M12 X 554 M16 X 65
40 mm4 M12 X 654 M16 X 75
50 mm4 M16 X 658 M20 X 75
65 mm4 M16 X 758 M20 X 90
80 mm4 M16 X 758 M20 X 90
100 mm8 M16 X 758 M20 X 100
125 mm8 M20 X 908 M20 X 100
150 mm8 M20 X 9012 M20 X 115
200 mm8 M20 X 9012 M24 X 125
250 mm12 M24 X 10016 M24 X 140
300 mm12 M24 X 10016 M30 X 150
350 mm12 M24 X 11520 M30 X 150
400 mm16 M24 X 11520 M30 X 165
450 mm20 M30 X 12524 M30 X 180
500 mm16 M30 X 12524 M30 X 165
600 mm20 M30 X 15024 M39 X 200*

Notes
Bolt lengths are for unlined piping and allow for 2 x 3mm thick washers and a 3mm thick gasket.
For the lined piping, add the compressed flange face linings dimensions and round up to the closest bolt length.

SABS 1123

Nominal Bore600 kPa1 000 kPa1 600 kPa2 500 kPa4 000 kPa
15 mm4M12 X 304M12 X 404M12 X 504M16 X 554M16 X 65
20 mm4M12 X 304M12 X 404M12 X 504M16 X 554M16 X 65
25 mm4M12 X 304M12 X 404M16 X 504M16 X 554M16 X 65
32 mm4M12 X 404M12 X 404M16 X 554M16 X 654M16 X 65
40 mm4M12 X 404M12 X 404M16 X 554M16 X 654M16 X 75
50 mm4M16 X 504M16 X 504M16 X 654M16 X 654M20 X 90
65 mm4M16 X 504M16 X 508M16 X 658M16 X 658M20 X 90
80 mm4M16 X 504M16 X 508M16 X 658M16 X 758M20 X 90
100 mm4M16 X 508M16 X 508M16 X 658M16 X 758M20 X 100
125 mm8M16 X 558M16 X 558M20 X 758M20 X 908M20 X 115
150 mm8M16 X 558M20 X 6512M20 X 7512M20 X 9012M20 X 115
200 mm8M16 X 558M20 X 7512M20 X 9012M20 X 10012M20 X 115
250 mm8M20 X 6512M20 X 7512M20 X 9012M20 X 10012M24 X 140
300 mm12M20 X 6512M20 X 9016M20 X 10012M20 X 11516M24 X 140
350 mm12M20 X 7512M20 X 9016M24 X 11516M24 X 14016M27 X 165
400 mm12M20 X 7512M20 X 10020M24 X 14020M24 X 15020M27 X 165
450 mm12M20 X 7516M20 X 10020M27 X 14020M27 X 16520M30 X 180
500 mm16M20 X 9016M20 X 11524M27 X 14024M27 X 18024M30 X 200
600 mm16M24 X 10016M27 X 14024M30 X 16524M30 X 20024M33 X 230

Notes
* Non-preffered Size
Bolt lengths are for unlined piping and allow for 2 x 3mm thick washers and a 3mm thick gasket.
For the lined piping, add the compressed flange face linings dimensions and round up to the closest bolt length.

BS 10

Nominal Bore600 kPa1 000 kPa1 600 kPa2 500 kPa4 000 kPa
10 mm4M10 X404M12 X454M12 X454M12 X454M12 X45
15 mm4M10 X404M12 X454M12 X454M12 X504M12 X50
20 mm4M10 X404M12 X454M12 X454M12 X504M12 X50
25 mm4M10 X404M12 X454M12 X454M12 X554M12 X65
32 mm4M12 X454M16 X504M16 X504M16 X654M16 X65
40 mm4M12 X454M16 X504M16 X504M16 X654M16 X65
50 mm4M12 X454M16 X504M16 X504M16 X654M16 X65
65 mm4M12 X454M16 X504M16 X508M16 X708M16 X70
80 mm4M16 X508M16 X508M16 X558M16 X708M16 X70
100 mm4M16 X508M16 X508M16 X558M20 X908M20 X90
125 mm8M16 X508M16 X558M16 X658M24 X908M24 X90
150 mm8M16 X508M20 X658M20 X758M24 X1008M24 X100
200 mm8M16 X558M20 X7512M20 X7512M24 X9012M24 X100
225 mm8M16 X658M20 X7512M20 X7512M24 X9012M30 X110
250 mm12M16 X6512M20 X7512M24 X9012M24 X10012M30 X115
300 mm12M20 X7512M20 X7512M24 X10016M24 X10016M30 X100
350 mm12M20 X7516M20 X9016M24 X10016M30 X11016M30 X130
400 mm16M20 X7516M24 X9016M24 X11516M30 X12516M36 X150
450 mm16M20 X9020M24 X10020M24 X12520M30 X14020M36 X165
500 mm20M20 X9020M24 X10020M30 X12520M30 X14020M36 X190
550 mm20M24 X9020M24 X11020M30 X12020M36 X165
600 mm20M24 X10020M24 X11520M30 X15020M36 X165