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| Duims maat | Diameter Uitwendis schroefdraad in MM. | Diameter Inwendig Scroefdraad in MM. | Diameter Uitwendig schroefdraad in Inch | Diameter Inwendig Scroefdraad in Inch |
| (in) | (mm) | (mm) | (in) | (in) |
| 1⁄16 | 7.723 | 6.561 | 0.3041 | 0.2583 |
| 1⁄8 | 9.728 | 8.566 | 0.3830 | 0.3372 |
| 1⁄4 | 13.157 | 11.445 | 0.5180 | 0.4506 |
| 3⁄8 | 16.662 | 14.950 | 0.6560 | 0.5886 |
| 1⁄2 | 20.955 | 18.631 | 0.8250 | 0.7335 |
| 5⁄8 | 22.911 | 20.587 | 0.9020 | 0.8105 |
| 3⁄4 | 26.441 | 24.117 | 1,04 | 0.9495 |
| 7⁄8 | 30.201 | 27.877 | 1,19 | 1,10 |
| 1 | 33.249 | 30.291 | 1,31 | 1,19 |
| 1 1⁄8 | 37.897 | 34.939 | 1,49 | 1,38 |
| 1 1⁄4 | 41.910 | 38.952 | 1,65 | 1,53 |
| 1 3⁄8 | 44.323 | 41.365 | 1,75 | 1,63 |
| 1 1⁄2 | 47.803 | 44.845 | 1,88 | 1,77 |
| 1 5⁄8 | 52.883 | 49.926 | 2,08 | 1,97 |
| 1 3⁄4 | 53.746 | 50.788 | 2,12 | 2,00 |
| 1 7⁄8 | 56.998 | 54.041 | 2,24 | 2,13 |
| 2 | 59.614 | 56.656 | 2,35 | 2,23 |
| 2 1⁄4 | 65.710 | 62.752 | 2,59 | 2,47 |
| 2 1⁄2 | 75.184 | 72.226 | 2,96 | 2,84 |
| 2 3⁄4 | 81.534 | 78.576 | 3,21 | 3,09 |
| 3 | 87.884 | 84.926 | 3,46 | 3,34 |
| 3 1⁄4 | 93.980 | 91.022 | 3,70 | 3,58 |
| 3 1⁄2 | 100.330 | 97.372 | 3,95 | 3,83 |
| 3 3⁄4 | 106.680 | 103.722 | 4,20 | 4,08 |
| 4 | 113.030 | 110.072 | 4,45 | 4,33 |
| 4 1⁄2 | 125.730 | 122.772 | 4,95 | 4,83 |
| 5 | 138.430 | 135.472 | 5,45 | 5,33 |
| 5 1⁄2 | 151.130 | 148.172 | 5,95 | 5,83 |
| 6 | 163.830 | 160.872 | 6,45 | 6,33 |
| 7 | 189.230 | 185.979 | 7,45 | 7,32 |
| 8 | 214.630 | 211.379 | 8,45 | 8,32 |
| 9 | 240.030 | 236.779 | 9,45 | 9,32 |
| 10 | 265.430 | 262.179 | 10,45 | 10,32 |