Flange Comparison Table
 
SIZE STAND-ARD CLASS FLANGE DIAMETER BOLT HOLE P.C.D. BOLT HOLE DIAMETER FLANGE THICKNESS RAISED FACE DIAMETER RAISED FACE HEIGHT No. OF BOLTS
D P d t R f N
ins mm ins mm ins mm ins mm ins mm ins mm  
1"   25mm ASME B16.5 150 4 1/4 108 3 1/8 79  5/8 16   9/16 14 2 51   1/16 1.6 4
300 4 7/8 124 3 1/2 89  3/4 19  11/16 18
600  1/4 6.4
900 5 7/8 149 4 102 1 25 1 1/8 29
BS EN 1092/1 (PN) 16 4 1/2 115 3 3/8 85   9/16 14  5/8 16 2 11/16 68   1/16 2 4
25  11/16 18
40
BS 10 E 4 1/2 115 3 1/4 83  4/7 14  3/8 9.5   4
F 4 3/4 121 3  7/16 87  11/16 18
H   9/16 14 2 1/2 64   1/16 1.6
J  3/4 19
R 5 127 3 3/4 95  7/8 22 3 76
 
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