Industry Standard Class 150 Series A Slip-On Bolting Matches

Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Hub Diameter (X)	Minimum Fillet Radius (r)	Flange Bore (B)	Approximate Weight	Bolt Circle (C)	Number of Holes	Diameter of Holes
26	34.25 in	2.69 in	29.50 in	3.69 in	28.25 in	0.38 in	26.25 in	289 lb	31.75 in	24	1.38 in
28	36.50 in	3.06 in	31.50 in	3.81 in	30.50 in	0.44 in	28.25 in	352 lb	34.00 in	28	1.38 in
30	38.75 in	3.31 in	33.75 in	3.94 in	32.50 in	0.44 in	30.25 in	416 lb	36.00 in	28	1.38 in
32	41.75 in	3.41 in	36.00 in	4.18 in	34.50 in	0.44 in	32.25 in	506 lb	38.50 in	28	1.62 in
34	43.75 in	3.68 in	38.00 in	4.25 in	36.50 in	0.50 in	34.25 in	561 lb	40.50 in	32	1.62 in
36	46.00 in	3.96 in	40.25 in	4.56 in	38.75 in	0.50 in	36.25 in	661 lb	42.75 in	32	1.62 in
38	48.75 in	4.06 in	42.25 in	4.56 in	41.25 in	0.50 in	38.25 in	780 lb	45.25 in	32	1.62 in
40	50.75 in	4.18 in	44.25 in	4.81 in	43.25 in	0.50 in	40.25 in	840 lb	47.25 in	36	1.62 in
42	53.00 in	4.43 in	47.00 in	5.06 in	45.50 in	0.50 in	42.25 in	961 lb	49.50 in	36	1.62 in
44	55.25 in	4.68 in	49.00 in	5.18 in	47.75 in	0.50 in	44.25 in	1071 lb	51.75 in	40	1.62 in
46	57.25 in	4.86 in	51.00 in	5.31 in	49.75 in	0.50 in	46.25 in	1156 lb	53.75 in	40	1.62 in
48	59.50 in	5.06 in	53.50 in	5.56 in	52.00 in	0.50 in	48.25 in	1282 lb	56.00 in	44	1.62 in

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