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Flange Dimension Lookup

ASME B16.5 & B16.47 Flange Dimension Data

Standard

Pressure Class

Nominal Pipe Size (NPS)

Flange Type

Unit:

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NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	88.9	11.2	60.5	4	12.7
3/4"	98.6	12.7	69.9	4	12.7
1"	108	14.2	79.2	4	12.7
1-1/4"	117.3	15.7	88.9	4	12.7
1-1/2"	127	17.5	98.6	4	12.7
2"	152.4	19	120.7	4	15.7
2-1/2"	177.8	22.4	139.7	4	15.7
3"	190.5	23.9	152.4	4	15.7
3-1/2"	215.9	23.9	177.8	8	15.7
4"	228.6	26.9	190.5	8	15.7
5"	254	26.9	215.9	8	15.7
6"	279.4	30.2	241.3	8	19
8"	342.9	33.3	298.5	8	19
10"	406.4	36.6	362	12	22.4
12"	482.6	39.6	431.8	12	22.4
14"	533.4	39.6	476.3	12	25.4
16"	596.9	42.9	539.8	16	25.4
18"	635	46	577.9	16	28.4
20"	698.5	49.3	635	20	28.4
24"	812.8	55.6	749.3	20	31.8

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	95.3	14.2	66.5	4	12.7
3/4"	117.3	15.7	82.6	4	15.7
1"	124	17.5	88.9	4	15.7
1-1/4"	133.4	19	98.6	4	15.7
1-1/2"	155.4	20.6	114.3	4	15.7
2"	165.1	22.4	127	8	15.7
2-1/2"	190.5	25.4	149.4	8	15.7
3"	209.6	28.4	168.1	8	19
3-1/2"	228.6	30.2	184.1	8	19
4"	254	31.8	200.2	8	19
5"	279.4	35.1	235	8	19
6"	317.5	36.6	269.7	12	22.4
8"	381	41.1	330.2	12	22.4
10"	444.5	47.8	387.3	16	25.4
12"	520.7	50.8	450.9	16	25.4
14"	584.2	53.8	514.4	20	28.4
16"	647.7	57.2	571.5	20	28.4
18"	711.2	60.5	628.7	24	28.4
20"	774.7	63.5	685.8	24	31.8
24"	914.4	69.9	812.8	24	38.1

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	95.3	14.2	66.5	4	12.7
3/4"	117.3	15.7	82.6	4	15.7
1"	124	17.5	88.9	4	15.7
1-1/4"	133.4	20.6	98.6	4	15.7
1-1/2"	155.4	22.4	114.3	4	15.7
2"	165.1	25.4	127	8	15.7
2-1/2"	190.5	28.4	149.4	8	15.7
3"	209.6	31.8	168.1	8	19
3-1/2"	228.6	35.1	184.1	8	19
4"	273.1	38.1	200.2	8	19
5"	330.2	44.4	235	8	22.4
6"	355.6	47.8	269.7	12	22.4
8"	419.1	55.6	330.2	12	22.4
10"	508	63.5	387.3	16	25.4
12"	558.8	66.5	450.9	16	28.4
14"	603.3	69.9	514.4	20	28.4
16"	685.8	76.2	571.5	20	28.4
18"	742.9	82.6	628.7	24	31.8
20"	812.8	88.9	685.8	24	31.8
24"	939.8	101.6	812.8	24	38.1

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	95.3	14.2	66.5	4	12.7
3/4"	117.3	15.7	82.6	4	15.7
1"	124	17.5	88.9	4	15.7
1-1/4"	133.4	20.6	98.6	4	15.7
1-1/2"	155.4	22.4	114.3	4	15.7
2"	165.1	25.4	127	8	15.7
2-1/2"	190.5	28.4	149.4	8	15.7
3"	209.6	31.8	168.1	8	19
3-1/2"	228.6	35.1	184.1	8	19
4"	273.1	38.1	200.2	8	19
5"	330.2	44.4	235	8	22.4
6"	355.6	47.8	269.7	12	22.4
8"	419.1	55.6	330.2	12	22.4
10"	508	63.5	387.3	16	25.4
12"	558.8	66.5	450.9	16	28.4
14"	603.3	69.9	514.4	20	28.4
16"	685.8	76.2	571.5	20	28.4
18"	742.9	82.6	628.7	24	31.8
20"	812.8	88.9	685.8	24	31.8
24"	939.8	101.6	812.8	24	38.1

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
3"	241.3	38.1	168.1	8	19
4"	292.1	44.4	200.2	8	19
5"	349.3	50.8	235	8	22.4
6"	381	55.6	269.7	12	22.4
8"	469.9	63.5	330.2	12	22.4
10"	546.1	69.9	387.3	16	25.4
12"	609.6	79.2	450.9	20	28.4
14"	641.3	85.9	514.4	20	28.4
16"	704.8	88.9	571.5	20	31.8
18"	787.4	101.6	628.7	24	31.8
20"	857.3	108	685.8	24	35.1
24"	1041.4	139.7	812.8	24	38.1

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	120.7	22.4	66.5	4	12.7
3/4"	130	25.4	82.6	4	15.7
1"	149.4	28.4	88.9	4	15.7
1-1/4"	158.8	28.4	98.6	4	15.7
1-1/2"	177.8	31.8	114.3	4	15.7
2"	215.9	38.1	127	8	15.7
2-1/2"	244.3	41.1	149.4	8	15.7
3"	266.7	47.8	168.1	8	19
3-1/2"	292.1	53.8	184.1	8	19
4"	311.2	53.8	200.2	8	19
5"	374.7	73.2	235	8	22.4
6"	393.7	82.6	269.7	12	22.4
8"	482.6	91.9	330.2	12	22.4
10"	584.2	108	387.3	16	25.4
12"	673.1	124	450.9	20	28.4
14"	749.3	133.4	514.4	20	31.8
16"	825.5	146	571.5	20	35.1
18"	914.4	162.1	628.7	24	35.1
20"	984.3	177.8	685.8	24	38.1
24"	1168.4	203.2	812.8	24	38.1

NPS	O.D. (mm)	Thk (mm)	B.C. (mm)	Bolts	Bolt Ø
1/2"	133.4	30.2	66.5	4	12.7
3/4"	139.7	31.8	82.6	4	15.7
1"	158.8	35.1	88.9	4	15.7
1-1/4"	184.1	38.1	98.6	4	15.7
1-1/2"	203.2	44.4	114.3	4	15.7
2"	235	50.8	127	8	15.7
2-1/2"	266.7	57.2	149.4	8	15.7
3"	304.8	66.5	168.1	8	19
3-1/2"	355.6	76.2	184.1	8	19
4"	381	76.2	200.2	8	19
5"	444.5	91.9	235	8	22.4
6"	520.7	108	269.7	12	22.4
8"	596.9	127	330.2	12	22.4
10"	723.9	165.1	387.3	16	25.4
12"	812.8	184.1	450.9	20	28.4