The ASME B16.5 lap joint flange dimensions chart, NPS 1/2 – 24″, Class 150# – 2500#

 

LAP JOINT FLANGE DIMENSIONS CLASS 150 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
1/2″ 0.88″ 3.50″ 2.38″ 1.19″ .44″ .62″ .12″ .62″ 4
3/4″ 1.09″ 3.88″ 2.75″ 1.50″ .50″ .62″ .12″ .62″ 4
1″ 1.36″ 4.25″ 3.12″ 1.94″ .56″ .69″ .12″ .62″ 4
1-1/4″ 1.70″ 4.62″ 3.50″ 2.31″ .62″ .81″ .19″ .62″ 4
1-1/2″ 1.97″ 5.00″ 3.88″ 2.56″ .69″ .88″ .25″ .62″ 4
2″ 2.44″ 6.00″ 4.75″ 3.06″ .75″ 1.00″ .31″ .75″ 4
2-1/2″ 2.94″ 7.00″ 5.50″ 3.56″ .88″ 1.12″ .31″ .75″ 4
3″ 3.57″ 7.50″ 6.00″ 4.25″ .94″ 1.19″ .38″ .75″ 4
3-1/2″ 4.07″ 8.50″ 7.00″ 4.81″ .94″ 1.25″ .38″ .75″ 8
4″ 4.57″ 9.00″ 7.50″ 5.31″ .94″ 1.31″ .44″ .75″ 8
5″ 5.66″ 10.00″ 8.50″ 6.44″ .94″ 1.44″ .44″ .88″ 8
6″ 6.72″ 11.00″ 9.50″ 7.56″ 1.00″ 1.56″ .50″ .88″ 8
8″ 8.72″ 13.50″ 11.75″ 9.69″ 1.12″ 1.75″ .50″ .88″ 8
10″ 10.88″ 16.00″ 14.25″ 12.00″ 1.19″ 1.94″ .50″ 1.00″ 12
12″ 12.88″ 19.00″ 17.00″ 14.38″ 1.25″ 2.19″ .50″ 1.00″ 12
14″ 14.14″ 21.00″ 18.75″ 15.75″ 1.38″ 3.12″ .50″ 1.12″ 12
16″ 16.16″ 23.50″ 21.25″ 18.00″ 1.44″ 3.44″ .50″ 1.12″ 16
18″ 18.18″ 25.00″ 22.75″ 19.88″ 1.56″ 3.81″ .50″ 1.25″ 16
20″ 20.20″ 27.50″ 25.00″ 22.00″ 1.69″ 4.06″ .50″ 1.25″ 20
22″ 22.22″ 29.50″ 27.25″ 24.25″ 1.81″ 4.25″ .50″ 1.38″ 20
24″ 24.25″ 32.00″ 29.50″ 26.12″ 1.88″ 4.38″ .50″ 1.38″ 20

 

LAP JOINT FLANGE DIMENSIONS CLASS 300 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
1/2″ 0.90″ 3.75″ 2.62″ 1.50″ 0.56″ 0.88″ .12″ 0.62″ 4
3/4″ 1.11″ 4.62″ 3.25″ 1.88″ 0.62″ 1.00″ .12″ 0.75″ 4
1″ 1.38″ 4.88″ 3.50″ 2.12″ 0.69″ 1.06″ .12″ 0.75″ 4
1-1/4″ 1.72″ 5.25″ 3.88″ 2.50″ 0.75″ 1.06″ .19″ 0.75″ 4
1-1/2″ 1.97″ 6.12″ 4.50″ 2.75″ 0.81″ 1.19″ .25″ 0.88″ 4
2″ 2.46″ 6.50″ 5.00″ 3.31″ 0.88″ 1.31″ .31″ 0.75″ 8
2-1/2″ 2.97″ 7.50″ 5.88″ 3.94″ 1.00″ 1.50″ .31″ 0.88″ 8
3″ 3.60″ 8.25″ 6.62″ 4.62″ 1.12″ 1.69″ .38″ 0.88″ 8
3-1/2″ 4.10″ 9.00″ 7.25″ 5.25″ 1.19″ 1.75″ .38″ 0.88″ 8
4″ 4.60″ 10.00″ 7.88″ 5.75″ 1.25″ 1.88″ .44″ 0.88″ 8
5″ 5.69″ 11.00″ 9.25″ 7.00″ 1.38″ 2.00″ .44″ 0.88″ 8
6″ 6.75″ 12.50″ 10.62″ 8.12″ 1.44″ 2.06″ .50″ 0.88″ 12
8″ 8.75″ 15.00″ 13.00″ 10.25″ 1.62″ 2.44″ .50″ 1.00″ 12
10″ 10.92″ 17.50″ 15.25″ 12.62″ 1.88″ 3.75″ .50″ 1.12″ 16
12″ 12.92″ 20.50″ 17.75″ 14.75″ 2.00″ 4.00″ .50″ 1.25″ 16
14″ 14.18″ 23.00″ 20.25″ 16.75″ 2.12″ 4.38″ .50″ 1.25″ 20
16″ 16.19″ 25.50″ 22.50″ 19.00″ 2.25″ 4.75″ .50″ 1.38″ 20
18″ 18.20″ 28.00″ 24.75″ 21.00″ 2.38″ 5.12″ .50″ 1.38″ 24
20″ 20.25″ 30.50″ 27.00″ 23.12″ 2.50″ 5.50″ .50″ 1.38″ 24
22″ 22.25″ 33.00″ 29.25″ 25.25″ 2.63″ 5.75″ .50″ 1.63″ 24
24″ 24.25″ 36.00″ 32.00″ 27.62″ 2.75″ 6.00″ .50″ 1.62″ 24

 

LAP JOINT FLANGE DIMENSIONS CLASS 400 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
1/2″ 0.90″ 3.75″ 2.62″ 1.50″ 0.56″ 0.88″ .12″ 0.62″ 4
3/4″ 1.11″ 4.62″ 3.25″ 1.88″ 0.62″ 1.00″ .12″ 0.75″ 4
1″ 1.38″ 4.88″ 3.50″ 2.12″ 0.69″ 1.06″ .12″ 0.75″ 4
1-1/4″ 1.72″ 5.25″ 3.88″ 2.50″ 0.81″ 1.12″ .19″ 0.75″ 4
1-1/2″ 1.97″ 6.12″ 4.50″ 2.75″ 0.88″ 1.25″ .25″ 0.88″ 4
2″ 2.46″ 6.50″ 5.00″ 3.31″ 1.00″ 1.44″ .31″ 0.75″ 8
2-1/2″ 2.97″ 7.50″ 5.88″ 3.94″ 1.12″ 1.62″ .31″ 0.88″ 8
3″ 3.60″ 8.25″ 6.62″ 4.62″ 1.25″ 1.81″ .38″ 0.88″ 8
3-1/2″ 4.10″ 9.00″ 7.25″ 5.25″ 1.38″ 1.94″ .38″ 1.00″ 8
4″ 4.60″ 10.00″ 7.88″ 5.75″ 1.38″ 2.00″ .44″ 1.00″ 8
5″ 5.69″ 11.00″ 9.25″ 7.00″ 1.50″ 2.12″ .44″ 1.00″ 8
6″ 6.75″ 12.50″ 10.62″ 8.12″ 1.62″ 2.25″ .50″ 1.00″ 12
8″ 8.75″ 15.00″ 13.00″ 10.25″ 1.88″ 2.69″ .50″ 1.12″ 12
10″ 10.92″ 17.50″ 15.25″ 12.62″ 2.12″ 4.00″ .50″ 1.25″ 16
12″ 12.92″ 20.50″ 17.75″ 14.75″ 2.25″ 4.25″ .50″ 1.38″ 16
14″ 14.18″ 23.00″ 20.25″ 16.75″ 2.38″ 4.62″ .50″ 1.38″ 20
16″ 16.19″ 25.50″ 22.50″ 19.00″ 2.50″ 5.00″ .50″ 1.50″ 20
18″ 18.20″ 28.00″ 24.75″ 21.00″ 2.62″ 5.38″ .50″ 1.50″ 24
20″ 20.25″ 30.50″ 27.00″ 23.12″ 2.75″ 5.75″ .50″ 1.62″ 24
22″ 22.25″ 33.00″ 29.25″ 25.25″ 2.88″ 6.00″ .50″ 1.75″ 24
24″ 24.25″ 36.00″ 32.00″ 27.62″ 3.00″ 6.25″ .50″ 1.88″ 24

 

LAP JOINT FLANGE DIMENSIONS CLASS 600 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
1/2″ 0.90″ 3.75″ 2.62″ 1.50″ 0.56″ 0.88″ .12″ 0.62″ 4
3/4″ 1.11″ 4.62″ 3.25″ 1.88″ 0.62″ 1.00″ .12″ 0.75″ 4
1″ 1.38″ 4.88″ 3.50″ 2.12″ 0.69″ 1.06″ .12″ 0.75″ 4
1-1/4″ 1.72″ 5.25″ 3.88″ 2.50″ 0.81″ 1.12″ .19″ 0.75″ 4
1-1/2″ 1.97″ 6.12″ 4.50″ 2.75″ 0.88″ 1.25″ .25″ 0.88″ 4
2″ 2.46″ 6.50″ 5.00″ 3.31″ 1.00″ 1.44″ .31″ 0.75″ 8
2-1/2″ 2.97″ 7.50″ 5.88″ 3.94″ 1.12″ 1.62″ .31″ 0.88″ 8
3″ 3.60″ 8.25″ 6.62″ 4.62″ 1.25″ 1.81″ .38″ 0.88″ 8
3-1/2″ 4.10″ 9.00″ 7.25″ 5.25″ 1.38″ 1.94″ .38″ 1.00″ 8
4″ 4.60″ 10.75″ 8.50″ 6.00″ 1.5″ 2.12″ .44″ 1.00″ 8
5″ 5.69″ 13.00″ 10.50″ 7.44″ 1.75″ 2.38″ .44″ 1.12″ 8
6″ 6.75″ 14.00″ 11.50″ 8.75″ 1.88″ 2.62″ .50″ 1.12″ 12
8″ 8.75″ 16.50″ 13.75″ 10.75″ 2.19″ 3.00″ .50″ 1.25″ 12
10″ 10.92″ 20.00″ 17.00″ 13.5″ 2.50″ 4.38″ .50″ 1.38″ 16
12″ 12.92″ 22.00″ 19.25″ 15.75″ 2.62″ 4.62″ .50″ 1.38″ 20
14″ 14.18″ 23.75″ 20.75″ 17.00″ 2.75″ 5.00″ .50″ 1.50″ 20
16″ 16.19″ 27.00″ 23.75″ 19.50″ 3.00″ 5.50″ .50″ 1.62″ 20
18″ 18.20″ 29.25″ 25.75″ 21.50″ 3.25″ 6.00″ .50″ 1.75″ 20
20″ 20.25″ 32.00″ 28.50″ 24.00″ 3.50″ 6.50″ .50″ 1.75″ 24
22″ 22.25″ 34.25″ 30.63″ 26.25″ 3.75″ 6.88″ .50″ 1.75″ 24
24″ 24.25″ 37.00″ 33.00″ 28.25″ 4.00″ 7.25″ .50″ 2.00″ 24

 

LAP JOINT FLANGE DIMENSIONS CLASS 900 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
3″ 3.60″ 9.50″ 7.50″ 5.00″ 1.50″ 2.13″ .38″ 1.00″ 8
4″ 4.60″ 11.50″ 9.25″ 6.25″ 1.75″ 2.75″ .44″ 1.25″ 8
5″ 5.69″ 13.75″ 11.00″ 7.50″ 3.00″ 3.13″ .44″ 1.38″ 8
6″ 6.75″ 15.00″ 12.50″ 9.25″ 2.19″ 3.38″ .50″ 1.25″ 12
8″ 8.75″ 18.50″ 15.50″ 11.75″ 2.50″ 4.50″ .50″ 1.50″ 12
10″ 10.92″ 21.50″ 18.50″ 14.50″ 2.75″ 5.00″ .50″ 1.50″ 16
12″ 12.92″ 24.00″ 21.00″ 16.50″ 3.13″ 5.63″ .50″ 1.50″ 20
14″ 14.18″ 25.25″ 22.00″ 17.75″ 3.38″ 6.13″ .50″ 1.63″ 20
16″ 16.19″ 27.75″ 24.25″ 20.00″ 3.50″ 6.50″ .50″ 1.75″ 20
18″ 18.20″ 31.00″ 27.00″ 22.25″ 4.00″ 7.50″ .50″ 2.00″ 20
20″ 20.25″ 33.75″ 29.50″ 24.50″ 4.25″ 8.25″ .50″ 2.13″ 20
24″ 24.25″ 41.00″ 35.50″ 29.50″ 5.50″ 10.50″ .50″ 2.63″ 20

 

LAP JOINT FLANGE DIMENSIONS CLASS 1500 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.88″ 4.75″ 3.25″ 1.38″ .250″ 1.50″ 1.50″ 0.88″ 1.25″ 0.88″ 4
3/4″ 1.09″ 5.13″ 3.50″ 1.69″ .250″ 1.75″ 1.63″ 1.00″ 1.38″ 0.88″ 4
1″ 1.36″ 5.88″ 4.00″ 2.00″ .250″ 2.06″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/4″ 1.70″ 6.25″ 4.38″ 2.50″ .250″ 2.50″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/2″ 1.95″ 7.00″ 4.88″ 2.88″ .250″ 2.75″ 2.00″ 1.25″ 1.75″ 1.13″ 4
2″ 2.44″ 8.50″ 6.50″ 3.63″ .250″ 4.13″ 2.50″ 1.50″ 2.25″ 1.00″ 8
2-1/2″ 2.94″ 9.63″ 7.50″ 4.13″ .250″ 4.88″ 2.75″ 1.63″ 2.50″ 1.13″ 8
3″ ** 3.57″ 10.50″ 8.00″ 5.00″ .250″ 5.25″ 3.13″ 1.88″ 2.88″ 1.25″ 8
4″ ** 4.57″ 12.25″ 9.50″ 6.19″ .250″ 6.38″ 3.81″ 2.13″ 3.56″ 1.38″ 8
5″ ** 5.66″ 14.75″ 11.50″ 7.31″ .250″ 7.75″ 4.38″ 2.88″ 4.13″ 1.63″ 8
6″ ** 6.72″ 15.50″ 12.50″ 8.50″ .250″ 9.00″ 4.94″ 3.25″ 4.69″ 1.50″ 12
8″ ** 8.72″ 19.00″ 15.50″ 10.63″ .250″ 11.50″ 5.88″ 3.63″ 5.63″ 1.75″ 12
10″ ** 10.88″ 23.00″ 19.00″ 12.75″ .250″ 14.50″ 6.50″ 4.25″ 6.25″ 2.00″ 12
12″ ** 12.88″ 26.50″ 22.50″ 15.00″ .250″ 17.75″ 7.38″ 4.88″ 7.13″ 2.13″ 16

 

LAP JOINT FLANGE DIMENSIONS CLASS 2500 ASME B16.5

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC) H T1 T2 RA Bolt Hole (B) No. of Bolt Holes
1/2″ 0.90″ 5.25″ 3.50″ 1.69″ 1.19″ 1.56″ .12″ 0.88″ 4
3/4″ 1.11″ 5.50″ 3.75″ 2.00″ 1.25″ 1.69″ .12″ 0.88″ 4
1″ 1.38″ 6.25″ 4.25″ 2.25″ 1.38″ 1.88″ .12″ 1.00″ 4
1-1/4″ 1.72″ 7.25″ 5.13″ 2.88″ 1.50″ 2.06″ .19″ 1.13″ 4
1-1/2″ 1.97″ 8.00″ 5.75″ 3.13″ 1.75″ 2.38″ .25″ 1.25″ 4
2″ 2.46″ 9.25″ 6.75″ 3.75″ 2.00″ 2.75″ .31″ 1.13″ 8
2-1/2″ 2.97″ 10.50″ 7.75″ 4.50″ 2.25″ 3.13″ .31″ 1.25″ 8
3″ 3.60″ 12.00″ 9.00″ 5.25″ 2.63″ 3.63″ .38″ 1.38″ 8
4″ 4.60″ 14.00″ 10.75″ 6.50″ 3.00″ 4.25″ .44″ 1.63″ 8
5″ 5.69″ 16.50″ 12.75″ 8.00″ 3.63″ 5.13″ .44″ 1.88″ 8
6″ 6.75″ 19.00″ 14.50″ 9.25″ 4.25″ 6.00″ .50″ 2.13″ 8
8″ 8.75″ 21.75″ 17.25″ 12.00″ 5.00″ 7.00″ .50″ 2.13″ 12
10″ 10.92″ 26.50″ 21.25″ 14.75″ 6.50″ 9.00″ .50″ 2.63″ 12
12″ 12.92″ 30.00″ 24.38″ 17.38″ 7.25″ 10.00″ .50″ 2.88″ 12