Flange Bolt Chart
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Flange
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NPS 4
Class 900
Dimensions for NPS 4 Class 900 generic flange
11.5
9.25
X
1.75
Field
Value
Notes
Outside Diameter of Flange (O)
11-1/2"
Note
Minimum Thickness of Flange (tf)
1-3/4"
Note
Diameter of Bolt Circle (W)
9-1/4"
Note
Flange dimensions in seconds.
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