ANSI B16.5 Class 1500 Slip-On Flanges

1500 CLASS

NPS	Outside Diameter (O)	Thickness (T)	Hub Diameter (X)	Length Through Hub (Y)	Bore (B)	Diameter of Bolt Circle (C)	Diameter of Bolt Holes (in)	Number of Bolts
1/2	121	22.4	38	32	22.4	82.6	7/8	4
3/4	130	25.4	44	35	27.7	88.9	7/8	4
1	149	28.4	52	41	34.5	101.6	1	4
1 1/4	159	28.4	64	41	43.2	111.1	1	4
1 1/2	178	31.8	70	44	49.5	124	1 1/8	4
2	216	38.1	105	57	62	165.1	1	8
2 1/2	244	41.1	124	64	74.7	190.5	1 1/8	8

Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Hub Diameter (X)	Bore (B)	Approximate Weight	Bolt Circle (C)	Number of Holes	Diameter of Holes
1/2	4.75 mm	0.88 mm	1.38 mm	1.25 mm	1.50 mm	0.88 mm	4 lb	3.25 mm	4	0.88 mm
3/4	5.13 mm	1.00 mm	1.69 mm	1.38 mm	1.75 mm	1.09 mm	5 lb	3.50 mm	4	0.88 mm
1	5.88 mm	1.13 mm	2.00 mm	1.63 mm	2.06 mm	1.36 mm	8 lb	4.00 mm	4	1.00 mm
1 1/4	6.25 mm	1.13 mm	2.50 mm	1.63 mm	2.50 mm	1.70 mm	9 lb	4.38 mm	4	1.00 mm
1 1/2	7.00 mm	1.25 mm	2.88 mm	1.75 mm	2.75 mm	1.95 mm	12 lb	4.88 mm	4	1.13 mm
2	8.50 mm	1.50 mm	3.63 mm	2.25 mm	4.13 mm	2.44 mm	25 lb	6.50 mm	8	1.00 mm
2 1/2	9.63 mm	1.63 mm	4.13 mm	2.50 mm	4.88 mm	2.94 mm	36 lb	7.50 mm	8	1.13 mm
3	10.50 mm	1.88 mm	5.00 mm	2.88 mm	5.25 mm	3.57 mm	48 lb	8.00 mm	8	1.25 mm
4	12.25 mm	2.13 mm	6.19 mm	3.56 mm	6.38 mm	4.57 mm	73 lb	9.50 mm	8	1.38 mm
5	14.75 mm	2.88 mm	7.31 mm	4.13 mm	7.75 mm	5.66 mm	130 lb	11.50 mm	8	1.63 mm
6	15.50 mm	3.25 mm	8.50 mm	4.69 mm	9.00 mm	6.72 mm	165 lb	12.50 mm	12	1.50 mm
8	19.00 mm	3.63 mm	10.63 mm	5.63 mm	11.50 mm	8.72 mm	260 lb	15.50 mm	12	1.75 mm
10	23.00 mm	4.25 mm	12.75 mm	6.25 mm	14.50 mm	10.88 mm	435 lb	19.00 mm	12	2.00 mm
12	26.50 mm	4.88 mm	15.00 mm	7.13 mm	17.75 mm	12.88 mm	580 lb	22.50 mm	16	2.13 mm