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AWWA C207-94 Class F
Pipe Size	Outside Diameter	Inside Diameter	Number of Bolt Holes	Bolt Hole Diameter	Bolt Circle	Thickness
4"	10	4.57	8	7/8	7-7/8	1.13
5"	11	5.66	8	7/8	9-1/4	1.21
6"	12-1/2	6.72	12	7/8	10-5/8	1.31
8"	15	8.72	12	1	13	1.31
10"	17-1/2	10.88	16	1-1/8	15-1/4	1.50
12"	20-1/2	12.88	16	1-1/4	17-3/4	1.63
14"	23	14.19	20	1-1/4	20-1/4	1.94
16"	25-1/2	16.19	20	1-3/8	22-1/2	2.14
18"	28	18.19	24	1-3/8	24-3/4	2.25
20"	30-1/2	20.19	24	1-3/8	27	2.33
22"	33	22.19	24	1-3/8	29-1/4	2.50
24"	36	24.19	24	1-5/8	32	2.69
26"	38-1/4	26.25	28	1-7/8	34-1/2	3.00
28"	40-3/4	28.25	28	1-7/8	37	3.13
30"	43	30.25	28	1-7/8	39-1/4	3.15
32"	45-1/4	32.25	28	1-7/8	41-1/2	3.25
34"	47-1/2	34.25	28	1-7/8	43-1/2	3.38
36"	50	36.25	32	2-1/8	46	3.46
38"	52-1/4	38.25	32	2-1/8	48	3.50
40"	54-1/4	54.25	36	2-1/8	50-1/4	3.63
42"	57	42.25	36	2-1/8	52-3/4	3.81
44"	59-1/4	44.25	36	2-1/8	55	4.00
46"	61-1/2	46.25	40	2-1/8	57-1/4	4.13
48"	65	48.25	40	2-1/8	60-3/4	4.50
Notes: This table is intended for estimating purposes only. Applications vary, confirm all dimensions with your engineering department prior to ordering. Refer to the AWWA C207-94 standard for complete engineering and applications information. All dimensions are in inches unless otherwise noted. Inside diameter and thickness dimensions are application specific. Recommended bolts are 1/8" smaller than the nominal bolt hole diameters shown.