ASME B16.5 Class 1500 Threaded Flange

Technical Drawing

Dimensions of 1500# Threaded Flanges

NPS	D	G	X	K
1/2	120	34.9	38	82.6
3/4	130	42.9	44	88.9
1	150	50.8	52	101.6
1-1/4	160	63.5	64	111.1
1-1/2	180	73.0	70	123.8
2	215	92.1	105	165.1
2-1/2	245	104.8	124	190.5

*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 1500, t (height of raused face)=7mm. All units are mm.

NPS	h	Q	Y	T
1/2	23	23.6	32	22.3
3/4	26	29.0	35	25.4
1	29	35.8	41	28.6
1-1/4	31	44.4	41	28.6
1-1/2	32	50.6	44	31.8
2	39	63.5	57	38.1
2-1/2	48	76.2	64	41.3

*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	7/8	3/4	110	1.74
3/4	4	7/8	3/4	115	2.34
1	4	1	7/8	125	3.44
1-1/4	4	1	7/8	125	3.91
1-1/2	4	1-1/8	1	140	5.36
2	8	1	7/8	145	9.85
2-1/2	8	1-1/8	1	160	13.7

*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.