Hydraulic Hose Sizes
Hydraulic hoses are often sized by a dash number. This can confuse many people. Below is a handy chart that shows the hydraulic hose sizes in dash number, inch and millimeter. Keep in mind, some hydraulic hoses still are not sized by this chart, but the vast majority are.
| Dash No. | Inches | Millimeters |
|---|---|---|
| -2 | 1/8 | 3.2 |
| -3 | 3/16 | 4.8 |
| -4 | 1/4 | 6.4 |
| -5 | 5/16 | 7.9 |
| -6 | 3/8 | 9.5 |
| -8 | 1/2 | 12.7 |
| -10 | 5/8 | 15.9 |
| -12 | 3/4 | 19.0 |
| -14 | 7/8 | 22.2 |
| -16 | 1 | 25.4 |
| -20 | 1 1/4 | 31.8 |
| -24 | 1 1/2 | 38.1 |
| -32 | 2 | 50.8 |
| -36 | 2 1/4 | 57.6 |
| -40 | 2 1/2 | 63.5 |
| -48 | 3 | 76.2 |
| -56 | 3 1/2 | 88.9 |
| -64 | 4 | 101.6 |
| -72 | 4 1/2 | 115.2 |