ASME B16.5 Class 600 Threaded Flange

Technical Drawing

Dimensions of 600# Threaded Flanges

NPS	D	G	X	K
1/2	95	34.9	38	66.7
3/4	115	42.9	48	82.6
1	125	50.8	54	88.9
1-1/4	135	63.5	64	98.4
1-1/2	155	73.0	70	114.3
2	165	92.1	84	127.0
2-1/2	190	104.8	100	149.2
3	210	127.0	117	168.3
3-1/2	230	139.7	133	184.2
4	275	157.2	152	215.9
5	330	185.7	189	266.7
6	355	215.9	222	292.1
8	420	269.9	273	349.2
10	510	323.8	343	431.8
12	560	381.0	400	489.0
14	605	412.8	432	527.0
16	685	469.9	495	603.2
18	745	533.4	546	654.0
20	815	584.2	610	723.9
22	870	641.4	663	777.7
24	940	692.2	718	838.2

*D: outside diameter of flange; K: diameter of bolt circle; G: outside diameter of raised face; X: diameter of hub at base; For all  threaded flanges of class 600, t (height of raused face)=7mm. All units are mm.

NPS	h	Q	Y	T
1/2	16	23.6	22	14.3
3/4	16	29.0	25	15.9
1	18	35.8	27	17.5
1-1/4	21	44.4	29	20.7
1-1/2	23	50.6	32	22.3
2	29	63.5	37	25.4
2-1/2	32	76.2	41	28.6
3	35	92.2	46	31.8
3-1/2	40	104.9	49	35.0
4	42	117.6	54	38.1
5	48	144.4	60	44.5
6	51	171.4	67	47.7
8	58	222.2	76	55.6
10	66	276.2	86	63.5
12	70	328.6	92	66.7
14	74	360.4	94	69.9
16	78	411.2	106	76.2
18	80	462.0	117	82.6
20	83	512.8	127	88.9
22	…	…	133	95.2
24	93	614.4	140	101.6

*h: minimum thread length; Q:minimum diameter of counterbore; Y: length through hub;  T: minimum thickness of flange; All units are mm.

NPS	n	d	l	L	Mass
1/2	4	5/8	1/2	75	0.74
3/4	4	3/4	5/8	90	1.27
1	4	3/4	5/8	90	1.52
1-1/4	4	3/4	5/8	95	2.03
1-1/2	4	7/8	3/4	110	2.96
2	8	3/4	5/8	110	3.62
2-1/2	8	7/8	3/4	120	5.28
3	8	7/8	3/4	125	7.00
3-1/2	8	1	7/8	140	8.84
4	8	1	7/8	145	14.5
5	8	1-1/8	1	165	24.4
6	12	1-1/8	1	170	28.7
8	12	1-1/4	1-1/8	190	43.4
10	16	1-3/8	1-1/4	215	70.3
12	20	1-3/8	1-1/4	220	84.2
14	20	1-1/2	1-3/8	235	98.7
16	20	1-5/8	1-1/2	255	142
18	20	1-3/4	1-5/8	275	173
20	24	1-3/4	1-5/8	285	220
22	24	1-7/8	1-3/4	305	…
24	24	2	1-7/8	330	312

*n: number of bolts; d: diameter of bolt holes; l: diameter of bolts; L: length of stud bolts for 7 mm raised face; Mass: approximate weights/masses of the flange; All units are mm except that d and l are provided in inch, the weights are in kg.

ASME B16.5 Threaded Flange, Classes
150#	300#	400#	600#
900#	1500#	2500#	-

*Click to view the dimensions and weights of threaded flanges of each pressure rating.