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 1/2" 40mm ASME B16.5 150 5 127 3 7/8 98  5/8 16  11/16 18 2 7/8 73   1/16 1.6 4
300 6 1/8 156 4 1/2 114  7/8 22.2 13/16 21
600  7/8 22  1/4 6.4
900 7 178    4 7/8 124    1 1/8 29 1 1/4 32
BS EN 1092/1 (PN) 16 5 7/8 150 4  5/16 110  11/16 18  5/8 16 3 1/2 88  1/8 3 4
25  11/16 18
40
BS 10 E 5 1/4 133 3 7/8 98   9/16 14  1/2 127   4
F 5 1/2 140 4 1/8 105  11/16 18
H  11/16 18 3 1/4 83   1/16 1.6
J  7/8 22
R 6 152 4 1/2 114  7/8 22 1 25 3 1/2 88
 
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