Use the table to quickly determine the ID (Inner Diameter) and OD (Outer Diameter) of Schedule 40 Steel Pipe.
| Nominal Dia (in) | Actual ID (in) | Actual OD (in) | Wt / Foot | Flange Dia (in) | Flange Thickness (in) | Bolt Cir Dia (in) | No of Bolts | Bolt Dia (in) | Bolt Length (in) | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.269 | 0.405 | 0.25 | |||||||
| 1/4 | 0.364 | 0.540 | 0.43 | |||||||
| 3/8 | 0.493 | 0.675 | 0.57 | |||||||
| 1/2 | 0.622 | 0.840 | 0.86 | |||||||
| 3/4 | 0.824 | 1.050 | 1.14 | |||||||
| 1 | 1.049 | 1.315 | 1.68 | 4.250 | 0.438 | 3.125 | 4 | 0.500 | 1.75 | |
| 1 1/4 | 1.380 | 1.660 | 2.28 | 4.625 | 0.500 | 3.500 | 4 | 0.500 | 2.00 | |
| 1 1/2 | 1.610 | 1.900 | 2.72 | 5.000 | 0.563 | 3.875 | 4 | 0.500 | 2.00 | |
| 2 | 2.067 | 2.375 | 3.66 | 6.000 | 0.625 | 4.750 | 4 | 0.625 | 2.25 | |
| 2 1/2 | 2.469 | 2.875 | 5.80 | 7.000 | 0.688 | 5.500 | 4 | 0.625 | 2.50 | |
| 3 | 3.068 | 3.500 | 7.58 | 7.500 | 0.750 | 6.000 | 4 | 0.625 | 2.50 | |
| 3 1/2 | 3.548 | 4.000 | 9.11 | 8.500 | 0.813 | 7.000 | 8 | 0.625 | 2.75 | |
| 4 | 4.029 | 4.500 | 10.80 | 9.000 | 0.938 | 7.500 | 8 | 0.625 | 3.00 | |
| 5 | 5.047 | 5.563 | 14.70 | 10.000 | 0.938 | 8.500 | 8 | 0.750 | 3.00 | |
| 6 | 6.065 | 6.625 | 19.00 | 11.000 | 1.000 | 9.500 | 8 | 0.750 | 3.25 | |
| 8 | 7.981 | 8.625 | 28.60 | 13.500 | 1.125 | 11.750 | 8 | 0.750 | 3.50 | |
| 10 | 10.020 | 10.750 | 40.50 | 16.000 | 1.188 | 14.250 | 12 | 0.875 | 3.75 | |
| 12 | 11.938 | 12.750 | 53.60 | 19.000 | 1.250 | 17.000 | 12 | 0.875 | 3.75 | |
| 14 | 13.126 | 14.000 | 63.30 | 21.000 | 1.375 | 18.750 | 12 | 1.000 | 4.25 | |
| 16 | 15.000 | 16.000 | 82.80 | 23.500 | 1.438 | 21.250 | 16 | 1.000 | 4.50 | |
| 18 | 16.876 | 18.000 | 105.00 | 25.000 | 1.563 | 22.750 | 16 | 1.125 | 4.75 | |
| 20 | 18.814 | 20.000 | 123.00 | 27.500 | 1.688 | 25.000 | 20 | 1.125 | 5.00 | |
| 24 | 22.626 | 24.000 | 171.00 | 32.000 | 1.875 | 29.500 | 20 | 1.250 | 5.50 |
Bolt length is based on (2) washers, (1) lock washer and (1) nut
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