Flange Bolt Chart
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Flange
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NPS 58
Class 400
Dimensions for NPS 58 Class 400 generic flange
71
66.25
X
tf
Field
Value
Notes
Outside Diameter of Flange (O)
71"
Note
Minimum Thickness of Flange (tf)
Note
Diameter of Bolt Circle (W)
66-1/4"
Note
Flange dimensions in seconds.
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