Metric 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	90	11.2	30	16	22.9	3
3/4	100	12.7	38	16	28.2	3
1	110	14.3	49	17	34.9	3
1-1/4	115	15.9	59	21	43.7	5
1-1/2	125	17.5	65	22	50	6
2	150	19.1	78	25	62.5	8
2-1/2	180	22.3	90	29	75.4	8
3	190	23.9	108	30	91.4	10
3-1/2	215	23.9	122	32	104.1	10
4	230	23.9	135	33	116.8	11
5	255	23.9	164	36	144.4	11
6	280	25.4	192	40	171.4	13
8	345	28.6	246	44	222.2	13
10	405	30.2	305	49	277.4	13
12	485	31.8	365	56	328.2	13
14	535	35	400	79	360.2	13
16	595	36.6	457	87	411.2	13
18	635	39.7	505	97	462.3	13
20	700	42.9	559	103	514.4	13
24	815	47.7	663	111	616	13

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	60.3	5/8	4	1/2	55	NA	50
3/4	69.9	5/8	4	1/2	65	NA	50
1	79.4	5/8	4	1/2	65	75	55
1-1/4	88.9	5/8	4	1/2	70	85	55
1-1/2	98.4	5/8	4	1/2	70	85	65
2	120.7	3/4	4	5/8	85	95	70
2-1/2	139.7	3/4	4	5/8	90	100	75
3	152.4	3/4	4	5/8	90	100	75
3-1/2	177.8	3/4	8	5/8	90	100	75
4	190.5	3/4	8	5/8	90	100	75
5	215.9	7/8	8	3/4	95	110	85
6	241.3	7/8	8	3/4	100	115	85
8	298.5	7/8	8	3/4	110	120	90
10	362.0	1	12	7/8	115	125	100
12	431.8	1	12	7/8	120	135	100
14	476.3	1-1/8	12	1	135	145	115
16	539.8	1-1/8	16	1	135	145	115
18	577.9	1-1/4	16	1-1/8	145	160	125
20	635.0	1-1/4	20	1-1/8	160	170	140
24	749.3	1-3/8	20	1-1/4	170	185	150

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	95	14.3	38	22	22.9	3
3/4	115	15.9	48	25	28.2	3
1	125	17.5	54	27	34.9	3
1-1/4	135	19.1	64	27	43.7	5
1-1/2	155	20.7	70	30	50	6
2	165	22.3	84	33	62.5	8
2-1/2	190	25.4	100	38	75.4	8
3	210	28.6	117	43	91.4	10
3-1/2	230	30.2	133	44	104.1	10
4	255	31.8	146	48	116.8	11
5	280	35	178	51	144.4	11
6	320	36.6	206	52	171.4	13
8	380	41.3	260	62	222.2	13
10	445	47.7	321	95	277.4	13
12	520	50.8	375	102	328.2	13
14	585	54	425	111	360.2	13
16	650	57.2	483	121	411.2	13
18	710	60.4	533	130	462.3	13
20	775	63.5	587	140	514.4	13
24	915	69.9	702	152	616	13

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	66.7	5/8	4	1/2	65	75	55
3/4	82.6	3/4	4	5/8	75	90	65
1	88.9	3/4	4	5/8	75	90	65
1-1/4	98.4	3/4	4	5/8	85	95	70
1-1/2	114.3	7/8	4	3/4	90	100	75
2	127.0	3/4	8	5/8	90	100	75
2-1/2	149.2	7/8	8	3/4	100	115	85
3	168.3	7/8	8	3/4	110	120	90
3-1/2	184.2	7/8	8	3/4	110	125	95
4	200.0	7/8	8	3/4	115	125	95
5	235.0	7/8	8	3/4	120	135	110
6	269.9	7/8	12	3/4	120	140	110
8	330.2	1	12	7/8	140	150	120
10	387.4	1-1/8	16	1	160	170	140
12	450.8	1-1/4	16	1-1/8	170	185	145
14	514.4	1-1/4	20	1-1/8	180	190	160
16	571.5	1-3/8	20	1-1/4	190	205	165
18	628.6	1-3/8	24	1-1/4	195	210	170
20	685.8	1-3/8	24	1-1/4	205	220	185
24	812.8	1-5/8	24	1-1/2	230	255	205

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	95	14.3	38	22	22.9	23.6
3/4	115	15.9	48	25	28.2	29
1	125	17.5	54	27	34.9	35.8
1-1/4	135	20.7	64	29	43.7	44.4
1-1/2	155	22.3	70	32	50	50.6
2	165	25.4	84	37	62.5	63.5
2-1/2	190	28.6	100	41	75.4	76.2
3	210	31.8	117	46	91.4	92.2
3-1/2	230	35	133	49	104.1	104.9
4	255	35	146	51	116.8	11
5	280	38.1	178	54	144.5	11
6	320	41.3	206	57	171.4	13
8	380	47.7	260	68	222.2	13
10	445	54	321	102	277.4	13
12	520	57.2	375	108	328.2	13
14	585	60.4	425	117	360.2	13
16	650	63.5	483	127	411.2	13
18	710	66.7	533	137	462.3	13
20	775	69.9	587	146	514.4	13
24	915	76.2	702	159	616	13

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	66.7	5/8	4	1/2	75	70	75
3/4	82.6	3/4	4	5/8	90	85	90
1	88.9	3/4	4	5/8	90	85	90
1-1/4	98.4	3/4	4	5/8	95	90	95
1-1/2	114.3	7/8	4	3/4	110	100	110
2	127.0	3/4	8	5/8	110	100	110
2-1/2	149.2	7/8	8	3/4	120	115	120
3	168.3	7/8	8	3/4	125	120	125
3-1/2	184.2	1	8	7/8	140	135	140
4	200.0	1	8	7/8	140	135	140
5	235.0	1	8	7/8	145	135	145
6	269.9	1	12	7/8	150	145	150
8	330.0	1-1/8	12	1	170	165	170
10	387.4	1-1/4	16	1-1/8	190	185	190
12	450.8	1-3/8	16	1-1/4	205	195	205
14	514.4	1-3/8	20	1-1/4	210	205	210
16	571.5	1-1/2	20	1-3/8	220	215	220
18	628.6	1-1/2	24	1-3/8	230	220	230
20	685.8	1-5/8	24	1-1/2	240	235	250
24	812.8	1-7/8	24	1-3/4	265	260	280

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	95	14.3	38	22	22.9	3
3/4	115	15.9	48	25	28.2	3
1	125	17.5	54	27	34.9	3
1-1/4	135	20.7	64	29	43.7	5
1-1/2	155	22.3	70	32	50	6
2	165	25.4	84	37	62.5	8
2-1/2	190	28.6	100	41	75.4	8
3	210	31.8	117	46	91.4	10
3-1/2	230	35	133	49	104.1	10
4	275	38.1	152	54	116.8	11
5	330	44.5	189	60	144.4	11
6	355	47.7	222	67	171.4	13
8	420	55.6	273	76	222.2	13
10	510	63.5	343	111	277.4	13
12	560	66.7	400	117	328.2	13
14	605	69.9	432	127	360.2	13
16	685	76.2	495	140	411.2	13
18	745	82.6	546	152	462.3	13
20	815	88.9	610	165	514.4	13
24	940	101.6	718	184	616	13

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	66.7	5/8	4	1/2	75	70	75
3/4	82.6	3/4	4	5/8	90	85	90
1	88.9	3/4	4	5/8	90	85	90
1-1/4	98.4	3/4	4	5/8	95	90	95
1-1/2	114.3	7/8	4	3/4	110	100	110
2	127.0	3/4	8	5/8	110	100	110
2-1/2	149.2	7/8	8	3/4	120	115	120
3	168.3	7/8	8	3/4	125	120	125
3-1/2	184.2	1	8	7/8	140	135	140
4	215.9	1	8	7/8	145	140	145
5	266.7	1-1/8	8	1	165	160	165
6	292.1	1-1/8	12	1	170	165	170
8	349.2	1-1/4	12	1-1/8	190	185	195
10	431.8	1-3/8	16	1-1/4	215	210	215
12	489.0	1-3/8	20	1-1/4	220	215	220
14	527.0	1-1/2	20	1-3/8	235	230	235
16	603.2	1-5/8	20	1-1/2	255	250	255
18	654.0	1-3/4	20	1-5/8	275	265	275
20	723.9	1-3/4	24	1-5/8	285	280	290
24	838.2	2	24	1-7/8	330	325	335

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	120	22.3	38	32	22.9	3
3/4	130	25.4	44	35	28.2	3
1	150	28.6	52	41	34.9	3
1-1/4	160	28.6	64	41	43.7	5
1-1/2	180	31.8	70	44	50	6
2	215	38.1	105	57	62.5	8
2-1/2	245	41.3	124	64	75.4	8
3	240	38.1	127	54	91.4	10
4	290	44.5	159	70	116.8	11
5	350	50.8	190	79	144.4	11
6	380	55.6	235	86	171.4	13
8	470	63.5	298	114	222.2	13
10	545	69.9	368	127	277.4	13
12	610	79.4	419	143	328.2	13
14	640	85.8	451	156	360.2	13
16	705	88.9	508	165	411.2	13
18	785	101.6	565	190	462.3	13
20	855	108	622	210	514.4	13
24	1040	139.7	749	267	616	13

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	82.6	7/8	4	3/4	110	100	110
3/4	88.9	7/8	4	3/4	115	110	115
1	101.6	1	4	7/8	125	120	125
1-1/4	111.1	1	4	7/8	125	120	125
1-1/2	123.8	1-1/8	4	1	140	135	140
2	165.1	1	8	7/8	145	140	145
2-1/2	190.5	1-1/8	8	1	160	150	160
3	190.5	1	8	7/8	145	140	145
4	235.0	1-1/4	8	1-1/8	170	165	170
5	279.4	1-3/8	8	1-1/4	190	185	190
6	317.5	1-1/4	12	1-1/8	190	185	195
8	393.7	1-1/2	12	1-3/8	220	215	220
10	469.9	1-1/2	16	1-3/8	235	230	235
12	533.4	1-1/2	20	1-3/8	255	250	255
14	558.8	1-5/8	20	1-1/2	275	265	280
16	616.0	1-3/4	20	1-5/8	285	280	290
18	685.8	2	20	1-7/8	325	320	335
20	749.3	2-1/8	20	2	350	345	360
24	901.7	2 5/8	20	2-1/2	440	430	455

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	120	22.3	38	32	22.9	3
3/4	130	25.4	44	35	28.2	3
1	150	28.6	52	41	34.9	3
1-1/4	160	28.6	64	41	43.7	5
1-1/2	180	31.8	70	44	50	6
2	215	38.1	105	57	62.5	8
2-1/2	245	41.3	124	64	75.4	8
3	265	47.7	133	73	91.4	10
4	310	54	162	90	116.8	11
5	375	73.1	197	105	144.4	11
6	395	82.6	229	119	171.4	13
8	485	92.1	292	143	222.2	13
10	585	108	368	178	277.4	13
12	675	123.9	451	219	328.2	13
14	750	133.4	495	241	360.2	13
16	825	146.1	552	260	411.2	13
18	915	162	597	276	462.3	13
20	985	177.8	641	292	514.4	13
24	1170	203.2	762	330	616	13

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	82.6	7/8	4	3/4	110	100	110
3/4	88.9	7/8	4	3/4	115	110	115
1	101.6	1	4	7/8	125	120	125
1-1/4	111.1	1	4	7/8	125	120	125
1-1/2	123.8	1-1/8	4	1	140	135	140
2	165.1	1	8	7/8	145	140	145
2-1/2	190.5	1-1/8	8	1	160	150	160
3	203.2	1-1/4	8	1-1/8	180	170	180
4	241.3	1	8	1-1/4	195	190	195
5	292.1	1-3/8	8	1-1/2	250	240	250
6	317.5	1-1/2	12	1-3/8	260	255	265
8	393.7	1-3/4	12	1-3/8	290	285	325
10	482.6	2	12	1-7/8	335	330	345
12	571.5	2-1/8	16	2	375	370	385
14	635.0	2-3/8	16	2-1/4	405	400	425
16	704.8	2-5/8	16	2-1/2	445	440	470
18	774.7	2-7/8	16	2-3/4	495	490	525
20	831.8	3-1/8	16	3	540	535	565
24	990.6	3-5/8	16	3-1/2	615	610	650

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	135	30.2	43	40	22.9	3
3/4	140	31.8	51	43	28.2	3
1	160	35	57	48	34.9	3
1-1/4	185	38.1	73	52	43.7	5
1-1/2	205	44.5	79	60	50	6
2	235	50.9	95	70	62.5	8
2-1/2	265	57.2	114	79	75.4	8
3	305	66.7	133	92	91.4	10
4	355	76.2	165	108	116.8	11
5	420	92.1	203	130	144.4	11
6	485	108	235	152	171.4	13
8	550	127	305	178	222.2	13
10	675	165.1	375	229	277.4	13
12	760	184.2	441	254	328.2	13
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	88.9	7/8	4	3/4	120	115	120
3/4	95.2	7/8	4	3/4	125	120	125
1	108.0	1	4	7/8	140	135	140
1-1/4	130.2	1-1/8	4	1	150	145	150
1-1/2	146.0	1-1/4	4	1-1/8	170	165	170
2	171.4	1-1/8	8	1	180	170	180
2-1/2	196.8	1-1/4	8	1-1/8	195	190	205
3	228.6	1-3/8	8	1-1/4	220	215	230
4	273.0	1-5/8	8	1-1/2	255	250	260
5	323.8	1-7/8	8	1-3/4	300	290	310
6	368.3	2-1/8	8	2	345	335	355
8	438.2	2-1/8	12	2	380	375	395
10	539.8	2-5/8	12	2-1/2	490	485	510
12	619.1	2-7/8	12	2-3/4	540	535	560
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

Metric 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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