The Piping Engineering World

Inch Dimensions of Socket Weld Flanges as per ASME B16.5

Socket Weld Flange Dimensions

150# | 300# | 400# | 600# | 900# | 1500#

150# Socket Weld Dimensions as per ASME B16.5

150# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	3.50	0.38	1.19	0.56	0.88	0.62	0.38
3/4	3.88	0.44	1.5	0.56	1.09	0.82	0.44
1	4.25	0.5	1.94	0.62	1.36	1.05	0.50
1-1/4	4.62	0.56	2.31	0.75	1.7	1.38	0.56
1-1/2	5.00	0.62	2.56	0.81	1.95	1.61	0.62
2	6.00	0.69	3.06	0.94	2.44	2.07	0.69
2-1/2	7.00	0.81	3.56	1.06	2.94	2.47	0.75
3	7.50	0.88	4.25	1.12	3.57	3.07	0.81

150# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	2.38	5/8	4	1/2	2.25	NA	2
3/4	2.75	5/8	4	1/2	2.5	NA	2
1	3.12	5/8	4	1/2	2.5	3.00	2.25
1-1/4	3.5	5/8	4	1/2	2.75	3.25	2.25
1-1/2	3.88	5/8	4	1/2	2.75	3.25	2.5
2	4.75	3/4	4	5/8	3.25	3.75	2.75
2-1/2	5.5	3/4	4	5/8	3.5	4.00.	3
3	6	3/4	4	5/8	3.5	4.00	3

150# | 300# | 400# | 600# | 900# | 1500#

300# Socket Weld Dimensions as per ASME B16.5

300# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	3.75	0.5	1.5	0.81	0.88	0.62	0.38
3/4	4.62	0.56	1.88	0.94	1.09	0.82	0.44
1	4.88	0.62	2.12	1	1.36	1.05	0.50
1-1/4	5.25	0.69	2.5	1	1.7	1.38	0.56
1-1/2	6.12	0.75	2.75	1.13	1.95	1.61	0.62
2	6.50	0.81	3.31	1.25	2.44	2.07	0.69
2-1/2	7.50	0.94	3.94	1.44	2.94	2.47	0.75
3	8.25	1.06	4.62	1.63	3.57	3.07	0.81

300# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	2.62	5/8	4	1/2	2.5	3.00	2.25
3/4	3.25	3/4	4	5/8	3	3.50	2.5
1	3.5	3/4	4	5/8	3	3.50	2.5
1-1/4	3.88	3/4	4	5/8	3.25	3.75	2.75
1-1/2	4.5	7/8	4	3/4	3.5	4.00	3
2	5	3/4	8	5/8	3.5	4.00	3
2-1/2	5.88	7/8	8	3/4	4	4.50	3.25
3	6.62	7/8	8	3/4	4.25	4.75	3.5

150# | 300# | 400# | 600# | 900# | 1500#

400# Socket Weld Dimensions as per ASME B16.5

400# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	3.75	0.56	1.5	0.88	0.88	0.12	0.38
3/4	4.62	0.62	1.88	1	1.09	0.12	0.44
1	4.88	0.69	2.12	1.06	1.36	0.12	0.50
1-1/4	5.25	0.81	2.5	1.12	1.7	0.19	0.56
1-1/2	6.12	0.88	2.75	1.25	1.95	0.25	0.62
2	6.50	1	3.31	1.44	2.44	0.31	0.69
2-1/2	7.50	1.12	3.94	1.62	2.94	0.31	0.75
3	8.25	1.25	4.62	1.81	3.57	0.38	0.81

400# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	2.62	5/8	4	1/2	3	2.75	3
3/4	3.25	3/4	4	5/8	3.5	3.25	3.5
1	3.5	3/4	4	5/8	3.5	3.25	3.5
1-1/4	3.88	3/4	4	5/8	3.75	3.50	3.75
1-1/2	4.5	7/8	4	3/4	4.25	4.00	4.25
2	5	3/4	8	5/8	4.25	4.00	4.25
2-1/2	5.88	7/8	8	3/4	4.75	4.50	4.75
3	6.62	7/8	8	3/4	5	4.75	5

150# | 300# | 400# | 600# | 900# | 1500#

600# Socket Weld Dimensions as per ASME B16.5

600# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	3.75	0.56	1.5	0.88	0.88	BY P	0.38
3/4	4.62	0.62	1.88	1	1.09	BY P	0.44
1	4.88	0.69	2.12	1.06	1.36	BY P	0.50
1-1/4	5.25	0.81	2.5	1.12	1.7	BY P	0.56
1-1/2	6.12	0.88	2.75	1.25	1.95	BY P	0.62
2	6.50	1	3.31	1.44	2.44	BY P	0.69
2-1/2	7.50	1.12	3.94	1.62	2.94	BY P	0.75
3	8.25	1.25	4.62	1.81	3.57	BY P	0.81

600# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	2.62	5/8	4	1/2	3	2.75	3
3/4	3.25	3/4	4	5/8	3.5	3.25	3.5
1	3.5	3/4	4	5/8	3.5	3.25	3.5
1-1/4	3.88	3/4	4	5/8	3.75	3.50	3.75
1-1/2	4.5	7/8	4	3/4	4.25	4.00	4.25
2	5	3/4	8	5/8	4.25	4.00	4.25
2-1/2	5.88	7/8	8	3/4	4.75	4.50	4.75
3	6.62	7/8	8	3/4	5	4.75	5

150# | 300# | 400# | 600# | 900# | 1500#

900# Socket Weld Dimensions as per ASME B16.5

900# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	4.75	0.88	1.5	1.25	0.88	BY P	0.38
3/4	5.12	1	1.75	1.38	1.09	BY P	0.44
1	5.88	1.12	2.06	1.62	1.36	BY P	0.50
1-1/4	6.25	1.12	2.5	1.62	1.7	BY P	0.56
1-1/2	7.00	1.25	2.75	1.75	1.95	BY P	0.62
2	8.50	1.5	4.12	2.25	2.44	BY P	0.69
2-1/2	9.62	1.62	4.88	2.5	2.94	BY P	0.75

900# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	3.25	7/8	4	3/4	4.25	4.00	4.25
3/4	3.5	7/8	4	3/4	4.5	4.25	4.5
1	4	1	4	7/8	5	4.75	5
1-1/4	4.38	1	4	7/8	5	4.75	5
1-1/2	4.88	1-1/8	4	1	5.5	5.25	5.5
2	6.5	1	8	7/8	5.75	5.50	5.75
2-1/2	7.5	1-1/8	8	1	6.25	6.00	6.25

150# | 300# | 400# | 600# | 900# | 1500#

1500# Socket Weld Dimensions as per ASME B16.5

1500# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	4.75	0.88	1.5	1.25	0.88	BY P	0.38
3/4	5.12	1	1.75	1.38	1.09	BY P	0.44
1	5.88	1.12	2.06	1.62	1.36	BY P	0.50
1-1/4	6.25	1.12	2.5	1.62	1.7	BY P	0.56
1-1/2	7.00	1.25	2.75	1.75	1.95	BY P	0.62
2	8.50	1.5	4.12	2.25	2.44	BY P	0.69
2-1/2	9.62	1.62	4.88	2.5	2.94	BY P	0.75

1500# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	3.25	7/8	4	3/4	4.25	4.00	4.25
3/4	3.5	7/8	4	3/4	4.5	4.25	4.5
1	4	1	4	7/8	5	4.75	5
1-1/4	4.38	1	4	7/8	5	4.75	5
1-1/2	4.88	1-1/8	4	1	5.5	5.25	5.5
2	6.5	1	8	7/8	5.75	5.50	5.75
2-1/2	7.5	1-1/8	8	1	6.25	6.00	6.25

150# | 300# | 400# | 600# | 900# | 1500#

General Notes

Dimensions are in millimeters, except for diameters of bolts and bolt holes, which are in inch units.