JIS20K FLANGE Standard Size(JIS B 2220/2239-2006)

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JIS20K Flange Standard Sizes
Port Diameter Size of Flange Bolt Hole Size of Bolt
Outside Diameter Thickness RF Part Pitch Circle Diameter No. Dia.
Excluded Gray Cast Iron Gray Cast Iron Height Dia.
D t t f g C n h
15A 95 14 16 1 51 70 4 15 M12
20A 100 16 18 1 56 75 4 15 M12
25A 125 16 20 1 67 90 4 19 M16
32A 135 18 20 2 76 100 4 19 M16
40A 140 18 22 2 81 105 4 19 M16
50A 155 18 22 2 96 120 8 19 M16
65A 175 20 24 2 116 140 8 19 M16
80A 200 22 26 2 132 160 8 23 M20
100A 225 24 28 2 160 185 8 23 M20
125A 270 26 30 2 195 225 8 25 M22
150A 305 28 32 2 230 260 12 25 M22
200A 350 30 34 2 275 305 12 25 M22
250A 430 34 38 2 345 380 12 27 M24
300A 480 36 40 3 395 430 16 27 M24
350A 540 40 44 3 440 480 16 33 M30
400A 605 46 50 3 495 540 16 33 M30
450A 675 48 54 3 560 605 20 33 M30
500A 730 50 58 3 615 660 20 33 M30
600A 845 54 66 3 720 770 24 39 M36