Industry Standard Class 250 Slip-On Flanges

ProductsNominal Pipe SizeOutside Diameter (O)Thickness (T)Raised Face Diameter (R)Length Thru Hub (Y)Base of Hub Diameter (X)Bore (B)Approximate Weight (lbs)Bolt Circle (C)Number of HolesDiameter of Bolt Holes
26250SOIS28 38.252.81 32.44 4.75 30.50 26.25 530 34.50 281.88
28250SOIS28 40.75 2.94 34.94 5.00 33.00 28.25 640 37.00 28 1.88
30250SOIS30 43.00 3.00 37.19 5.0035.25 30.25 71039.2528 1.88
32250SOIS32 45.25 3.12 39.44 5.13 37.50 32.25 80041.50 28 1.88
34250SOIS34 47.50 3.2541.44 5.25 39.50 36.25 89043.50 28 1.88
36250SOIS3650.00 3.38 43.69 5.3841.50 36.25 97046.0032 2.13
38250SOIS38 52.25 3.4445.69 5.50 43.50 38.25 1050 48.00 32 2.13
40250SOIS40 54.50 3.56 47.94 5.50 45.75 40.25 1175 50.25 36 2.13
42250SOIS42 57.00 3.69 50.44 5.63 47.75 42.25 1300 52.75 36 2.13
44250SOIS44 59.25 3.7552.69 5.75 49.75 44.25140055.00 36 2.13
46250SOIS46 61.50 3.88 54.94 5.88 51.75 46.25 1500 57.25 40 2.13
48250SOIS48 65.004.00 58.44 6.00 54.0048.25 1800 60.75 40 2.13