Flange Dimensions Lookup

Confirm flange bolt pattern details before field install.

Outside diameter, bolt circle, bolt count and size, hole and raised-face diameter for every NPS.

Select imperial for inches or metric for millimeters.

reference snapshot, Class 150 and 300, NPS 1/2 to 24.

Outside diameter, raised-face diameter, bolt circle, bolt count and bolt-hole diameter. Flange thickness and Class 600 and above are not tabulated.