Stud Bolts Dimensions for ASME B16.47 Series B Class 75 RF flanges

July 12, 2024

NPS	N	D
26	36	5/8
28	40	5/8
30	44	5/8
32	48	5/8
34	52	5/8
36	40	3/4
38	40	3/4
40	44	3/4
42	48	3/4
44	36	7/8
46	40	7/8
48	44	7/8
50	44	7/8
52	48	7/8
54	48	7/8
56	40	1
58	44	1
60	44	1

*n: number of bolts; D: diameter of the stub bolts, unit is inch.

NPS	L	Mass
26	115	0.254
28	115	0.254
30	115	0.254
32	118	0.258
34	118	0.258
36	129	0.427
38	133	0.434
40	133	0.434
42	136	0.440
44	151	0.659
46	154	0.667
48	157	0.676
50	160	0.681
52	160	0.681
54	163	0.688
56	175	0.974
58	179	0.988
60	185	1.007

*L: length of stub bolts, unit is mm; Mass: mass of boltings for ASME B16.47 Series B Class 75 flanges, unit is kg.

Dimensions & Masses of the Boltings

Boltings for Series A Flanges in Classes
150#	300#	400#
600#	900#	-

*Click to view the dimensions & masses of the stud bolt with two heavy hex nuts for series A flange.

Boltings for Series B Flanges in Classes
75#	150#	300#
400#	600#	900#

*Click to view the dimensions & masses of the stud bolt with two heavy hex nuts for series B flange.

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