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  
1/2" 15mm ASME B16.5 150 3 1/2 89 2 3/8 60  5/8 16   7/16 11 1 3/8 35   1/16 1.6 4
300 3 3/4 95 2 5/8 67   9/16 14
600  1/4 6.4
900 4 3/4 121 3 1/4 83  7/8 22  7/8 22
BS EN 1092/1 (PN) 16 3 3/4 95 2  9/16 65   9/16 14   9/16 14 1 3/4 45   1/16 2 4
25  5/8 15
40
BS 10 E 3 3/4 95 2  9/16 65   9/16 14  3/8 10   4
F
H 4 1/2 114 3 1/4 83  11/16 18  1/2 13 2 1/4 57   1/16 16
J  5/8 16
R  3/4 19 2 1/2 64
 
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