Flange - Threaded, ANSI Class 2500, B16.5 (in) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size
(NPS) | Outside Diameter of Flange
A | Diameter of Raised Face
B | Thickness of Flange
C | Diameter of Hub at Base
J | Length of Hub
L | Minimum Thread Length
N | Diameter of Bore
S | Number of Bolt Holes
NBH | Diameter of Bolt Holes
DBH | Bolt Circle Diameter
P | Approx. Weight
(lb) AW |
| 1/2 | 5 1/4 | 1 3/8 | 1 3/16 | 1 11/16 | 1 9/16 | 1 1/8 | 0.93 | 4 | 7/8 | 3 1/2 | 7 |
| 3/4 | 5 1/2 | 1 11/16 | 1 1/4 | 2 | 1 11/16 | 1 1/4 | 1.14 | 4 | 7/8 | 3 3/4 | 9 |
| 1 | 6 1/4 | 2 | 1 3/8 | 2 1/4 | 1 7/8 | 1 3/8 | 1.41 | 4 | 1 | 4 1/4 | 12 |
| 1 1/4 | 7 1/4 | 2 1/2 | 1 1/2 | 2 7/8 | 2 1/16 | 1 1/2 | 1.75 | 4 | 1 1/8 | 5 1/8 | 18 |
| 1 1/2 | 8 | 2 7/8 | 1 3/4 | 3 1/8 | 2 3/8 | 1 3/4 | 1.99 | 4 | 1 1/4 | 5 3/4 | 25 |
| 2 | 9 1/4 | 3 5/8 | 2 | 3 3/4 | 2 3/4 | 2 | 2.50 | 8 | 1 1/8 | 6 3/4 | 38 |
| 2 1/2 | 10 1/2 | 4 1/8 | 2 1/4 | 4 1/2 | 3 1/8 | 2 1/4 | 3.00 | 8 | 1 1/4 | 7 3/4 | 55 |
| 3 | 12 | 5 | 2 5/8 | 5 1/4 | 3 5/8 | 2 1/2 | 3.63 | 8 | 1 3/8 | 9 | 83 |
| 3 1/2 | - | - | - | - | - | - | - | - | - | - | - |
| 4 | 14 | 6 3/16 | 3 | 6 1/2 | 4 1/4 | 2 3/4 | 4.63 | 8 | 1 5/8 | 10 3/4 | 127 |
| 5 | 16 1/2 | 7 5/16 | 3 5/8 | 8 | 5 1/8 | 3 | 5.69 | 8 | 1 7/8 | 12 3/4 | 210 |
| 6 | 19 | 8 1/2 | 4 1/4 | 9 1/4 | 6 | 3 1/4 | 6.75 | 8 | 2 1/8 | 14 1/2 | 323 |
| 8 | 21 3/4 | 10 5/8 | 5 | 12 | 7 | 3 3/4 | 8.75 | 12 | 2 1/8 | 17 1/4 | 485 |
| 10 | 26 1/2 | 12 3/4 | 6 1/2 | 14 3/4 | 9 | 4 1/4 | 10.88 | 12 | 2 5/8 | 21 1/4 | 925 |
| 12 | 30 | 15 | 7 1/4 | 17 3/8 | 10 | 4 3/4 | 12.94 | 12 | 2 7/8 | 24 3/8 | 1300 |
- This datasheet is for threaded flanges that have a raised face connection.
- Dimensions and tolerances in accordance with ANSI/ASME B16.5 for sizes 1/2" to 24".
- When using carbon steel, forgings to be in accordance with ASTM A105.
- Flanges are tapped with American National Standard taper pipe threads.
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
