Flange Bolt Chart
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Flange
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NPS 8
Class 900
Dimensions for NPS 8 Class 900 generic flange
18.5
15.5
X
2.5
Field
Value
Notes
Outside Diameter of Flange (O)
18-1/2"
Note
Minimum Thickness of Flange (tf)
2-1/2"
Note
Diameter of Bolt Circle (W)
15-1/2"
Note
Flange dimensions in seconds.
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