Blind Flange 150# Bolt Pattern

Nominal Size/ OD O.D. B.H. B.C. # BOLTS THICKNESS
¾” 3.875 .625 2.75 4 1”
1" 4.25 .625 3.125 4 1”
1-1/4” 4.625 .625 3.5 4 1”
1-1/2” 5 .625 3.875 4 1”
2” 6 .75 4.75 4 1”
3” 7.5 .75 6 4 1”
4” 9 .75 7.5 8 1”
6" 11 .875 9.5 8 1”
8" 13.5 .875 11.75 8 1”
10" 16 1 14.5 12 1”
12" 19 1 17 12 1”
14" 21 1.125 18.75 12 1”
16" 23.5 1.125 21.25 16 1”
18" 25 1.25 22.75 16 1”
20" 27.5 1.25 25 20 1”
22" 29.5 1.375 27.25 20 1”
24" 32 1.375 29.5 20 1”
26" 34.25 1.375 31.75 24 1”
28" 36.5 1.375 34 28 1”
30" 38.75 1.375 36 28 1”
32" 41.75 1.625 38.5 28 1”
36" 46 1.625 42.75 32 1”

These blind flanges are used for capping only. They are NOT fully pressure rated.