The charts show the dimensions of slip on flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters.
SLIP-ON FLANGE DIMENSIONS
IN INCHES
SLIP-ON CLASS 150
Slip on flange dimensions class 150 in inches (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″
3.50″
2.38″
1.38″
.063″
1.19″
.62″
.38″
.56″
.62″
4
3/4″
1.09″
3.88″
2.75″
1.69″
.063″
1.50″
.62″
.44″
.56″
.62″
4
1″
1.36″
4.25″
3.12″
2.00″
.063″
1.94″
.69″
.50″
.63″
.62″
4
1-1/4″
1.70″
4.62″
3.50″
2.50″
.063″
2.31″
.81″
.56″
.75″
.62″
4
1-1/2″
1.97″
5.00″
3.88″
2.88″
.063″
2.56″
.88″
.62″
.82″
.62″
4
2″
2.44″
6.00″
4.75″
3.62″
.063″
3.06″
1.00″
.69″
.94″
.75″
4
2-1/2″
2.94″
7.00″
5.50″
4.12″
.063″
3.56″
1.12″
.82″
1.06″
.75″
4
3″
3.57″
7.50″
6.00″
5.00″
.063″
4.25″
1.19″
.88″
1.13″
.75″
4
3-1/2″
4.07″
8.50″
7.00″
5.50″
.063″
4.81″
1.25″
.88″
1.19″
.75″
8
4″
4.57″
9.00″
7.50″
6.19″
.063″
5.31″
1.31″
.88″
1.25″
.75″
8
5″
5.66″
10.00″
8.50″
7.31″
.063″
6.44″
1.44″
.88″
1.38″
.88″
8
6″
6.72″
11.00″
9.50″
8.50″
.063″
7.56″
1.56″
.94″
1.50″
.88″
8
8″
8.72″
13.50″
11.75″
10.62″
.063″
9.69″
1.75″
1.06″
1.69″
.88″
8
10″
10.88″
16.00″
14.25″
12.75″
.063″
12.00″
1.94″
1.13″
1.88″
1.00″
12
12″
12.88″
19.00″
17.00″
15.00″
.063″
14.38″
2.19″
1.19″
2.13″
1.00″
12
14″
14.14″
21.00″
18.75″
16.25″
.063″
15.75″
2.25″
1.32″
2.19″
1.12″
12
16″
16.16″
23.50″
21.25″
18.50″
.063″
18.00″
2.50″
1.38″
2.44″
1.12″
16
18″
18.18″
25.00″
22.75″
21.00″
.063″
19.88″
2.69″
1.50″
2.63″
1.25″
16
20″
20.20″
27.50″
25.00″
23.00″
.063″
22.00″
2.88″
1.63″
2.83″
1.25″
20
22″
22.22″
29.50″
27.25″
25.25″
.063″
24.25″
3.13″
1.75″
3.07″
1.38″
20
24″
24.25″
32.00″
29.50″
27.25″
.063″
26.12″
3.25″
1.82″
3.19″
1.38″
20
SLIP-ON CLASS 300
Slip on flange dimensions class 300 in inches (ASME B16.5)
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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″
3.75″
2.62″
1.38″
.063″
1.50″
0.88″
0.50″
0.82″
0.62″
4
3/4″
1.09″
4.62″
3.25″
1.69″
.063″
1.88″
1.00″
.056″
0.94″
0.75″
4
1″
1.36″
4.88″
3.50″
2.00″
.063″
2.12″
1.06″
0.63″
1.00″
0.75″
4
1-1/4″
1.70″
5.25″
3.88″
2.50″
.063″
2.50″
1.06″
0.69″
1.00″
0.75″
4
1-1/2″
1.95″
6.12″
4.50″
2.88″
.063″
2.75″
1.19″
0.75″
1.13″
0.88″
4
2″
2.44″
6.50″
5.00″
3.62″
.063″
3.31″
1.31″
0.82″
1.25″
0.75″
8
2-1/2″
2.94″
7.50″
5.88″
4.12″
.063″
3.94″
1.50″
0.94″
1.44″
0.88″
8
3″
3.57″
8.25″
6.62″
5.00″
.063″
4.62″
1.69″
1.06″
1.63″
0.88″
8
3-1/2″
4.07″
9.00″
7.25″
5.50″
.063″
5.25″
1.75″
1.13″
1.69″
0.88″
8
4″
4.57″
10.00″
7.88″
6.19″
.063″
5.75″
1.88″
1.19″
1.82″
0.88″
8
5″
5.66″
11.00″
9.25″
7.31″
.063″
7.00″
2.00″
1.32″
1.94″
0.88″
8