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1" NB (DN25) Flange Table - Flange Dimensions

1" Flange Diameter PCD No. of Bolt Holes Diameter of Bolts Diameter of Holes Diameter of Raised Face Height of Raised Face
PN6 100mm 75mm 4 M10 11mm 60mm 2mm
PN10 115mm 85mm 4 M12 14mm 68mm 2mm
PN16 115mm 85mm 4 M12 14mm 68mm 2mm
PN25 115mm 85mm 4 M12 14mm 68mm 2mm
PN40 115mm 85mm 4 M12 14mm 68mm 2mm
PN64 140mm 100mm 4 M16 18mm 68mm 2mm
Table D 4 1/2" (114mm) 3 1/4" (83mm) 4 1/2" (13mm) 9/16" (14mm)    
Table E 4 1/2" (114mm) 3 1/4" (83mm) 4 1/2" (13mm) 9/16" (14mm)    
Table F 4 3/4" (121mm) 3 7/16" (87mm) 4 5/8" (16mm) 11/16" (17mm) 2 1/2" (64mm) 1/16" (2mm)
Table H 4 3/4" (121mm) 3 7/16" (87mm) 4 5/8" (16mm) 11/16" (17mm) 2 1/2" (64mm) 1/16" (2mm)
ANSI 125/150 4 1/4" (108mm) 3 1/8" (79mm) 4 1/2" (13mm) 5/8" (16mm) 2" (51mm) 1/16" (2mm)
ANSI 300 4 7/8" (124mm) 3 1/2" (89mm) 4 5/8" (16mm) 3/4" (19mm) 2" (51mm) 1/16" (2mm)

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