Inch Dimensions of Lap Joint Flanges as per ASME B16.5

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

150# Lap Joint Flange Dimensions as per ASME B16.5

150# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	3.50	0.44	1.19	0.62	0.90	0.12
3/4	3.88	0.50	1.50	0.62	1.11	0.12
1	4.25	0.56	1.94	0.69	1.38	0.12
1-1/4	4.62	0.62	2.31	0.81	1.72	0.19
1-1/2	5.00	0.69	2.56	0.88	1.97	0.25
2	6.00	0.75	3.06	1.00	2.46	0.31
2-1/2	7.00	0.88	3.56	1.12	2.97	0.31
3	7.50	0.94	4.25	1.19	3.60	0.38
3-1/2	8.50	0.94	4.81	1.25	4.10	0.38
4	9.00	0.94	5.31	1.31	4.60	0.44
5	10.00	0.94	6.44	1.44	5.69	0.44
6	11.00	1.00	7.56	1.56	6.75	0.50
8	13.50	1.12	9.69	1.75	8.75	0.50
10	16.00	1.19	12.00	1.94	10.92	0.50
12	19.00	1.25	14.38	2.19	12.92	0.50
14	21.00	1.38	15.75	3.12	14.18	0.50
16	23.50	1.44	18.00	3.44	16.19	0.50
18	25.00	1.56	19.88	3.81	18.20	0.50
20	27.50	1.69	22.00	4.06	20.25	0.50
24	32.00	1.88	26.12	4.38	24.25	0.50

150# Bolts 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	3.50	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	5.50	3/4	4	5/8	3.5	4.00.	3
3	6.00	3/4	4	5/8	3.5	4.00	3
3-1/2	7.00	3/4	8	5/8	3.5	4.00	3
4	7.50	3/4	8	5/8	3.5	4.00	3
5	8.50	7/8	8	3/4	3.75	4.25	3.25
6	9.50	7/8	8	3/4	4	4.50	3.25
8	11.75	7/8	8	3/4	4.25	4.75	3.5
10	14.25	1	12	7/8	4.5	5.00	4
12	17.00	1	12	7/8	4.75	5.25	4
14	18.75	1-1/8	12	1	5.25	5.75	4.5
16	21.25	1-1/8	16	1	5.25	5.75	4.5
18	22.75	1-1/4	16	1-1/8	5.75	6.25	5
20	25.00	1-1/4	20	1-1/8	6.25	6.75	5.5
24	29.50	1-3/8	20	1-1/4	6.75	7.25	6

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

300# Lap Joint Flange Dimensions as per ASME B16.5

300# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	3.75	0.56	1.50	0.88	0.90	0.12
3/4	4.62	0.62	1.88	1.00	1.11	0.12
1	4.88	0.69	2.12	1.06	1.38	0.12
1-1/4	5.25	0.75	2.50	1.06	1.72	0.19
1-1/2	6.12	0.81	2.75	1.19	1.97	0.25
2	6.50	0.88	3.31	1.31	2.46	0.31
2-1/2	7.50	1.00	3.94	1.50	2.97	0.31
3	8.25	1.12	4.62	1.69	3.60	0.38
3-1/2	9.00	1.19	5.25	1.75	4.10	0.38
4	10.00	1.25	5.75	1.88	4.60	0.44
5	11.00	1.38	7.00	2.00	5.69	0.44
6	12.5O	1.44	8.12	2.06	6.75	0.50
8	15.00	1.62	10.25	2.44	8.75	0.50
10	17.50	1.88	12.62	3.75	10.92	0.50
12	20.50	2.00	14.75	4.00	12.92	0.50
14	23.00	2.12	16.75	4.38	14.18	0.50
16	25.50	2.25	19.00	4.75	16.19	0.50
18	28.00	2.38	21.00	5.12	18.20	0.50
20	30.50	2.50	23.12	5.50	20.25	0.50
24	36.00	2.75	27.62	6.00	24.25	0.50

300# Bolts 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	3.50	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	4.50	7/8	4	3/4	3.5	4.00	3
2	5.00	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
3-1/2	7.25	7/8	8	3/4	4.25	5.00	3.75
4	7.88	7/8	8	3/4	4.5	5.00	3.75
5	9.25	7/8	8	3/4	4.75	5.25	4.25
6	10.62	7/8	12	3/4	4.75	5.50	4.25
8	13.00	1	12	7/8	5.5	6.00	4.75
10	15.25	1-1/8	16	1	6.25	6.75	5.5
12	17.75	1-1/4	16	1-1/8	6.75	7.25	5.75
14	20.25	1-1/4	20	1-1/8	7	7.50	6.25
16	22.50	1-3/8	20	1-1/4	7.5	8.00	6.5
18	24.75	1-3/8	24	1-1/4	7.75	8.25	6.75
20	27.00	1-3/8	24	1-1/4	8	8.75	7.25
24	32.00	1-5/8	24	1-1/2	9	10.00	8

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

400# Lap Joint Flange Dimensions as per ASME B16.5

400# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	3.75	0.56	1.50	0.88	0.90	0.93
3/4	4.62	0.62	1.88	1.00	1.11	1.14
1	4.88	0.69	2.12	1.06	1.38	1.41
1-1/4	5.25	0.81	2.50	1.12	1.72	1.75
1-1/2	6.12	0.88	2.75	1.25	1.97	1.99
2	6.50	1.00	3.31	1.44	2.46	2.50
2-1/2	7.50	1.12	3.94	1.62	2.97	3.00
3	8.25	1.25	4.62	1.81	3.60	3.63
3-1/2	9.00	1.38	5.25	1.94	4.10	4.13
4	10.00	1.38	5.75	2.00	4.60	0.44
5	11.00	1.50	7.00	2.12	5.69	0.44
6	12.50	1.62	8.12	2.25	6.75	0.50
8	15.00	1.88	10.25	2.69	8.75	0.50
10	17.50	2.12	12.62	4.00	10.92	0.50
12	20.50	2.25	14.75	4.25	12.92	0.50
14	23.00	2.38	16.75	4.62	14.18	0.50
16	25.50	2.50	19.00	5.00	16.19	0.50
18	28.00	2.62	21.00	5.38	18.20	0.50
20	30.50	2.75	23.12	5.75	20.25	0.50
24	36.00	3.00	27.62	6.25	24.25	0.50

400# Bolts 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	3.50	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	4.50	7/8	4	3/4	4.25	4.00	4.25
2	5.00	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
3-1/2	7.25	1	8	7/8	5.5	5.25	5.5
4	7.88	1	8	7/8	5.5	5.25	5.5
5	9.25	1	8	7/8	5.75	5.25	5.75
6	10.62	1	12	7/8	6	5.75	6
8	13.00	1-1/8	12	1	6.75	6.50	6.75
10	15.25	1-1/4	16	1-1/8	7.5	7.25	7.5
12	17.75	1-3/8	16	1-1/4	8	7.75	8
14	20.25	1-3/8	20	1-1/4	8.25	8.00	8.25
16	22.50	1-1/2	20	1-3/8	8.75	8.50	8.75
18	24.75	1-1/2	24	1-3/8	9	8.75	9
20	27.00	1-5/8	24	1-1/2	9.5	9.25	9.75
24	32.00	1-7/8	24	1-3/4	10.5	10.25	11

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

600# Lap Joint Flange Dimensions as per ASME B16.5

600# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	3.75	0.56	1.50	0.88	0.90	0.12
3/4	4.62	0.62	1.88	1.00	1.11	0.12
1	4.88	0.69	2.12	1.06	1.38	0.12
1-1/4	5.25	0.81	2.50	1.12	1.72	0.19
1-1/2	6.12	0.88	2.75	1.25	1.97	0.25
2	6.50	1.00	3.31	1.44	2.46	0.31
2-1/2	7.50	1.12	3.94	1.62	2.97	0.31
3	8.25	1.25	4.62	1.81	3.60	0.38
3-1/2	9.00	1.38	5.25	1.94	4.10	0.38
4	10.75	1.50	6.00	2.12	4.60	0.44
5	13.00	1.75	7.44	2.38	5.69	0.44
6	14.00	1.88	8.75	2.62	6.75	0.50
8	16.50	2.19	10.75	3.00	8.75	0.50
10	20.00	2.50	13.50	4.38	10.92	0.50
12	22.00	2.62	15.75	4.62	12.92	0.50
14	23.75	2.75	17.00	5.00	14.18	0.50
16	27.00	3.00	19.50	5.50	16.19	0.50
18	29.25	3.25	21.50	6.00	18.20	0.50
20	32.00	3.50	24.00	6.50	20.25	0.50
24	37.00	4.00	28.25	7.25	24.25	0.50

600# Bolts 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	3.50	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	4.50	7/8	4	3/4	4.25	4.00	4.25
2	5.00	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
3-1/2	7.25	1	8	7/8	5.5	5.25	5.5
4	8.50	1	8	7/8	5.75	5.50	5.75
5	10.50	1-1/8	8	1	6.5	6.25	6.5
6	11.50	1-1/8	12	1	6.75	6.50	6.75
8	13.75	1-1/4	12	1-1/8	7.5	7.25	7.75
10	17.00	1-3/8	16	1-1/4	8.5	8.25	8.5
12	19.25	1-3/8	20	1-1/4	8.75	8.50	8.75
14	20.75	1-1/2	20	1-3/8	9.25	9.00	9.25
16	23.75	1-5/8	20	1-1/2	10	9.75	10
18	25.75	1-3/4	20	1-5/8	10.75	10.50	10.75
20	28.50	1-3/4	24	1-5/8	11.25	11.00	11.5
24	33.00	2	24	1-7/8	13	12.75	13.25

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

900# Lap Joint Flange Dimensions as per ASME B16.5

900# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	4.75	0.88	1.50	1.25	0.90	0.12
3/4	5.12	1.00	1.75	1.38	1.11	0.12
1	5.88	1.12	2.06	1.62	1.38	0.12
1-1/4	6.25	1.12	2.50	1.62	1.72	0.19
1-1/2	7.00	1.25	2.75	1.75	1.97	0.25
2	8.50	1.50	4.12	2.25	2.46	0.31
2-1/2	9.62	1.62	4.88	2.50	2.97	0.31
3	9.50	NA	5.00	2.12	3.60	0.38
4	11.50	NA	6.25	2.75	4.60	0.44
5	13.75	NA	7.50	3.12	5.69	0.44
6	15.00	NA	9.25	3.38	6.75	0.50
8	18.50	NA	11.75	4.50	8.75	0.50
10	21.50	NA	14.50	5.00	10.92	0.50
12	24.00	NA	16.50	5.62	12.92	0.50
14	25.25	NA	17.75	6.12	14.18	0.50
16	27.75	NA	20.00	6.50	16.19	0.50
18	31.00	NA	22.25	7.50	18.20	0.50
20	33.75	NA	24.50	8.25	20.25	0.50
24	41.00	NA	29.50	10.50	24.25	0.50

900# Bolts 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	3.50	7/8	4	3/4	4.5	4.25	4.5
1	4.00	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	6.50	1	8	7/8	5.75	5.50	5.75
2-1/2	7.50	1-1/8	8	1	6.25	6.00	6.25
3	7.50	1	8	7/8	5.75	5.50	5.75
4	9.25	1-1/4	8	1-1/8	6.75	6.50	6.75
5	11.00	1-3/8	8	1-1/4	7.5	7.25	7.5
6	12.50	1-1/4	12	1-1/8	7.5	7.25	7.75
8	15.50	1-1/2	12	1-3/8	8.75	8.50	8.75
10	18.50	1-1/2	16	1-3/8	9.25	9.00	9.25
12	21.00	1-1/2	20	1-3/8	10	9.75	10
14	22.00	1-5/8	20	1-1/2	10.75	10.50	11
16	24.25	1-3/4	20	1-5/8	11.25	11.00	11.5
18	27.00	2	20	1-7/8	12.75	12.50	13.25
20	29.50	2-1/8	20	2	13.75	13.50	14.25
24	35.50	2-5/8	20	2-1/2	17.25	17.00	18

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

1500# Lap Joint Flange Dimensions as per ASME B16.5

1500# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	4.75	0.88	1.50	1.25	0.90	0.12
3/4	5.12	1.00	1.75	1.38	1.11	0.12
1	5.88	1.12	2.06	1.62	1.38	0.12
1-1/4	6.25	1.12	2.50	1.62	1.72	0.19
1-1/2	7.00	1.25	2.75	1.75	1.97	0.25
2	8.50	1.50	4.12	2.25	2.46	0.31
2-1/2	9.62	1.62	4.88	2.50	2.97	0.31
3	10.50	1.88	5.25	2.88	3.60	0.38
4	12.25	2.12	6.38	3.56	4.60	0.44
5	14.75	2.88	7.75	4.12	5.69	0.44
6	15.50	3.25	9.00	4.69	6.75	0.50
8	19.00	3.62	11.50	5.62	8.75	0.50
10	23.00	4.25	14.50	7.00	10.92	0.50
12	26.50	4.88	17.75	8.62	12.92	0.50
14	29.50	5.25	19.50	9.50	14.18	0.50
16	32.50	5.75	21.75	10.25	16.19	0.50
18	36.00	6.38	23.50	10.88	18.20	0.50
20	38.75	7.00	25.25	11.50	20.25	0.50
24	46.00	8.00	30.00	13.00	24.25	0.50

1500# Bolts 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	3.50	7/8	4	3/4	4.5	4.25	4.5
1	4.00	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	6.50	1	8	7/8	5.75	5.50	5.75
2-1/2	7.50	1-1/8	8	1	6.25	6.00	6.25
3	8.00	1-1/4	8	1-1/8	7	6.75	7
4	9.50	1	8	1-1/4	7.75	7.50	7.75
5	11.50	1-3/8	8	1-1/2	9.75	9.50	9.75
6	12.50	1-1/2	12	1-3/8	10.25	10.00	10.5
8	15.50	1-3/4	12	1-3/8	11.5	11.25	12.75
10	19.00	2	12	1-7/8	13.25	13.00	13.5
12	22.50	2-1/8	16	2	14.75	14.50	15.25
14	25.00	2-3/8	16	2-1/4	16	15.75	16.75
16	27.75	2-5/8	16	2-1/2	17.5	17.25	18.5
18	30.50	2-7/8	16	2-3/4	19.5	19.25	20.75
20	32.75	3-1/8	16	3	21.25	21.00	22.25
24	39.00	3-5/8	16	3-1/2	24.25	24.00	25.5

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

2500# Lap Joint Flange Dimensions as per ASME B16.5

2500# Flange Body Dimensions

NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius
1/2	5.25	1.19	1.69	1.56	0.90	0.12
3/4	5.50	1.25	2.00	1.69	1.11	0.12
1	6.25	1.38	2.25	1.88	1.38	0.12
1-1/4	7.25	1.50	2.88	2.06	1.72	0.19
1-1/2	8.00	1.75	3.12	2.38	1.97	0.25
2	9.25	2.00	3.75	2.75	2.46	0.31
2-1/2	10.50	2.25	4.50	3.12	2.97	0.31
3	12.00	2.62	5.25	3.62	3.60	0.38
4	14.00	3.00	6.50	4.25	4.60	0.44
5	16.50	3.62	8.00	5.12	5.69	0.44
6	19.00	4.25	9.25	6.00	6.75	0.50
8	21.75	5.00	12.00	7.00	8.75	0.50
10	26.50	6.50	14.75	9.00	10.92	0.50
12	30.00	7.25	17.38	10.00	12.92	0.50
NPS	O Flange OD	tf (Min.) Flange Thickness	X Hub Dia.	Y Hub Length	B Bore Diameter	r Corner Radius

2500# Bolts 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	3.50	7/8	4	3/4	4.75	4.50	4.75
3/4	3.75	7/8	4	3/4	5	4.75	5
1	4.25	1	4	7/8	5.5	5.25	5.5
1-1/4	5.12	1-1/8	4	1	6	5.75	6
1-1/2	5.75	1-1/4	4	1-1/8	6.75	6.50	6.75
2	6.75	1-1/8	8	1	7	6.75	7
2-1/2	7.75	1-1/4	8	1-1/8	7.75	7.50	8
3	9.00	1-3/8	8	1-1/4	8.75	8.50	9
4	10.75	1-5/8	8	1-1/2	10	9.75	10.25
5	12.75	1-7/8	8	1-3/4	11.75	11.50	12.25
6	14.50	2-1/8	8	2	13.5	13.25	14
8	17.25	2-1/8	12	2	15	14.75	15.5
10	21.25	2-5/8	12	2-1/2	19.25	19.00	20
12	24.38	2-7/8	12	2-3/4	21.25	21.00	22
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)

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

The Piping Engineering World

Inch Dimensions of Lap Joint Flanges as per ASME B16.5

150# Lap Joint Flange Dimensions as per ASME B16.5

150# Flange Body Dimensions

150# Bolts Template

300# Lap Joint Flange Dimensions as per ASME B16.5

300# Flange Body Dimensions

300# Bolts Template

400# Lap Joint Flange Dimensions as per ASME B16.5

400# Flange Body Dimensions

400# Bolts Template

600# Lap Joint Flange Dimensions as per ASME B16.5

600# Flange Body Dimensions

600# Bolts Template

900# Lap Joint Flange Dimensions as per ASME B16.5

900# Flange Body Dimensions

900# Bolts Template

1500# Lap Joint Flange Dimensions as per ASME B16.5

1500# Flange Body Dimensions

1500# Bolts Template

2500# Lap Joint Flange Dimensions as per ASME B16.5

2500# Flange Body Dimensions

2500# Bolts Template

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