Dimensions of Caps
Dimension Table
| Nominal Pipe Size (NPS) | Outside Diameter of Barrel | Length,E [Notes(1)] | Limiting Wall Thickness for Length, E | Length, E1 [Notes(2)] |
| ½ | 21.3 | 25 | 4.57 | 25 |
| ¾ | 26.7 | 25 | 3.81 | 25 |
| 1 | 33.4 | 38 | 4.57 | 38 |
| 1 ¼ | 42.2 | 38 | 4.83 | 38 |
| 1 ½ | 48.3 | 38 | 5.08 | 38 |
| 2 | 60.3 | 38 | 5.59 | 44 |
| 2½ | 73.0 | 38 | 7.11 | 51 |
| 3 | 88.9 | 51 | 7.62 | 64 |
| 3½ | 101.6 | 64 | 8.13 | 76 |
| 4 | 114.3 | 64 | 8.64 | 76 |
| 5 | 141.3 | 76 | 9.65 | 89 |
| 6 | 168.3 | 89 | 10.92 | 102 |
| 8 | 219.1 | 102 | 12.7 | 127 |
| 10 | 273.0 | 127 | 12.7 | 152 |
| 12 | 323.8 | 152 | 12.7 | 178 |
| 14 | 355.6 | 1658 | 12.7 | 191 |
| 16 | 406.4 | 178 | 12.7 | 203 |
| 18 | 457.0 | 203 | 12.7 | 229 |
| 20 | 508.0 | 229 | 12.7 | 254 |
| 22 | 559.0 | 254 | 12.7 | 254 |
| 24 | 610.0 | 267 | 12.7 | 254 |
| 26 | 660.0 | 267 | ... | ... |
| 28 | 711.0 | 267 | ... | ... |
| 30 | 762.0 | 267 | ... | ... |
| 32 | 813.0 | 267 | ... | ... |
| 34 | 864.0 | 267 | ... | ... |
| 36 | 914.0 | 267 | ... | ... |
| 38 | 965.0 | 305 | ... | ... |
| 40 | 1016.0 | 305 | ... | ... |
| 42 | 1067.0 | 305 | ... | ... |
| 44 | 1118.0 | 343 | ... | ... |
| 46 | 1168.0 | 343 | ... | ... |
| 48 | 1219.0 | 343 | ... | ... |
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