ASME/ANSI B16.5 Class 600 TH

Standards, Dimensions & Weight of Threaded flanges

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Nominal Pipe Size	Outside Diameter of Flange	Diameter of Raised Face	Thickness of Flanges Min.	Diameter of Hub	Length Through Hub	Thread Length Threaded Min.	Bore	Counter-bore Threaded Flange, Min.	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolts	Approxi-mate Weight kgs
NPS	O	R	tf	X	Y	T	B	Q	W	I	n
1/2	95	34.9	14.3	38	22	16	22.2	23.6	66.7	15.9	4	0.74
3/4	115	42.9	15.9	48	25	16	27.7	29.0	82.6	19.1	4	1.21
1	125	50.8	17.5	54	27	18	34.5	35.8	88.9	19.1	4	1.56
1 1/4	135	63.5	20.7	64	29	21	43.2	44.4	98.4	19.1	4	2.11
1 1/2	155	73.0	22.3	70	32	23	49.5	50.6	114.3	22.2	4	2.97
2	165	92.1	25.4	84	37	29	61.9	63.5	127.0	19.1	8	3.64
2 1/2	190	104.8	28.6	100	41	32	74.6	76.2	149.2	22.2	8	5.26
3	210	127.0	31.8	117	46	35	90.7	92.2	168.3	22.2	8	7.08
3 1/2	230	139.7	35.0	133	49	40	103.4	104.9	184.2	25.4	8	8.99
4	275	157.2	38.1	152	54	42	116.1	117.6	215.9	25.4	8	14.83
5	330	185.7	44.5	189	60	48	143.8	144.4	266.7	28.6	8	24.46
6	355	215.9	47.7	222	67	51	170.7	171.4	292.1	28.6	12	28.78
8	420	269.9	55.6	273	76	58	221.5	222.2	349.2	31.8	12	43.77
10	510	323.8	63.5	343	86	66	276.2	276.2	431.8	34.9	16	71.35
12	560	381.0	66.7	400	92	70	327.0	328.6	489.0	34.9	20	84.95
14	605	412.8	69.9	432	94	74	359.2	360.4	527.0	38.1	20	100.05
16	685	469.9	76.2	495	106	78	410.5	411.2	603.2	41.3	20	141.69
18	745	533.4	82.6	546	117	80	461.8	462.0	654.0	44.5	20	175.13
20	815	584.2	88.9	610	127	83	513.1	512.8	723.9	44.5	24	222.87
24	940	692.2	101.6	718	140	93	616.0	614.4	838.2	50.8	24	313.75