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AANBEVOLEN BOORMATEN VOOR UNIFIED EN AMERIKAANSE DRAAD.
Nr. duim mm aantal g/" Naam min. mm max. mm theoretische
diam mm		 vermoedelijke
boordiam mm
0 0.060 1.524 80. NF 1.181 1.305 1.181 1.219
              1.191 1.229
1 0.73 1.854 64 NC 1.425 1.582 1.397 1.435
              1.511 1.549
1 0.073 1.854 72 NF 1.473 1.613 1.511 1.549
              1.587 1.626
2 0.086 2.184 56 NC 1.694 1.872 1.702 1.745
              1.778 1.821
              1.854 1.897
2 0.086 2.184 64 NF 1.755 1.913 1.778 1.821
              1.854 1.897
3 0.099 2.515 48 NC 1.940 2.146 1.930 1.979
              1.984 2.032
              1.994 2.042
              2.057 2.106
              2.083 2.131
3 0.099 2.515 56 NF 2.024 2.197 2.057 2.106
              2.083 2.131
              2.184 2.233
4 0.112 2.845 40 NC 2.156 2.385 2.184 2.233
              2.161 2.311
              2.375 2.426
              2.382 2.433
4 0.112 2.845 48 NF 2.271 2.459 2.261 2.311
              2.375 2.426
              2.382 2.433
              2.438 2.489
5 0.125 3.175 40 NC 2.487 2.697 2.489 2.548
              2.527 2.586
              2.578 2.696
              2.642 2.700
5 0.125 3.175 44 NF 2.550 2.741 2.578 2.636
              2.642 2.700
              2.705 2.763
6 0.138 3.505 32 NC 2.642 2.896 2.642 2.700
              2.705 2.763
              2.779 2.845
              2.794 2.860
              2.819 2.885
              2.870 2.936
6 0.138 3.505 40 NF 2.819 3.023 2.819 2.885
              2.870 2.936
              2.946 3.012
8 0.164 4.166 32 NC 3.302 3.531 3.454 3.528
8 0.164 4.166 36 NF 3.404 3.607 3.454 3.528
              3.569 3.642
              3.571 3.645
10 0.190 4.826 24 NC 3.683 3.962 3.658 3.739
              3.734 3.815
              3.797 3.878
              3.861 3.942
              3.912 3.993
10 0.190 4 .826 32 NF 3.962 4.166 3.967 4.049
              3.988 4.069
              4.039 4.120
              4.089 4.171
12 0.216 5.486 24 NC 4.343 4.597 4.366 4.455
              4.394 4.483
              4.496 4.585
              4.572 4.661
12 0.216 5.486 28 NF 4.496 4.724 4.596 4.585
              4.572 4.661
              4.623 4.712
              4.699 4.788
  1/4 6.350 20 UNC 4.978 5.258 4.978 5.075
              5.055 5.151
              5.105 5.202
              5.159 5.255
              5.182 5.278
              5.220 5.316
  1/4 6.350 28 UNF 5.359 5.588 5.410 5.507
              5.557 5.654
  1/4 6.350 32 NEF 5.486 5.690 5.557 5.654
              5.613 5.710
  1/4 6.350 36 UNS 5.588 5.740 5.613 5.710
  5/16 7.938 18 UNS 6.401 6.731 6.528 6.624
              6.629 6.733
  5/16 7.938 24 UNF 6.782 7.036 6.756 6.860
              6.909 7.013
              7.036 7.140
  5/16 7.938 32 NEF 7.087 7.264 7.137 7.244
              7.142 7.249
  5/16 7.938 36 UNS 7.163 7.341 7.249 7.356
  3/8 9.525 16 UNC 7.798 8.153 7.937 8.049
              8.026 8.138
  3/8 9.525 24 UNF 8.382 8.636 8.433 8.544
              8.611 8.722
  3/8 9.525 32 NEF 8.611 8.865 8.732 8.847
              8.839 8.953
  3/8 9.525 36 UNS 8.763 8.941 8.839 8.953
  7/16 11.112 14 UNC 9.144 9.550 9.093 9.210
              9.129 9.246
  7/16 11.112 20 UNF 9.728 10.033 9.804 9.921
              9.921 10.038
  7/16 11.112 28 UNEF 10.135 10.338 10.262 10.378
  1/2 12.700 12 N 10.414 10.871 10.490 10.609
              10.716 10.836
  1/2 12.700 13 UNC 10.592 11.024 10.716 10.836
  1/2 12.700 20 UNF 11.328 11.608 11.508 11.628
  1/2 12.700 28 UNEF 11.709 11.938 11.907 12.029
  9/16 14.288 12 UNC 11.989 12.446 11.907 12.029
              12.304 12.426
  9/16 14.288 18 UNF 12.751 13.081 12.700 12.822
              12.857 12.979
  9/16 14.288 24 NEF 13.132 13.386 13.096 13.218
              13.216 13.337
  9/16 14.288 28 UNS 13.310 13.513 13.492 13.617
              13.368 13.492
  5/8 15.875 11 UNC 13.386 13.868 13.492 13.619
  5/8 15.875 12 NNC 13.589 14.046 13.891 14.016
  5/8 15.875 18 UNF 14.351 14.681 14.287 14.412
              14.445 14.569
  5/8 15.875 24 NEF 14.732 14.986 14.684 14.808
              14.803 14.927
  5/8 15.875 28 UNS 14.884 15.113 15.082 15.207
  11/16 17.462 12 N 15.164 15.621 15.082 15.603
              15.479 15.603
  11/16 17.462 24 NEF 16.307 16.561 16.271 16.398
  3/4 19.050 10 UNC 16.307 16.840 16.271 16.398
              16.667 16.797
  3/4 19.050 12 N 16.764 17.221 16.667 16.794
              17.066 17.193
  3/4 19.050 16 UNF 17.322 17.678 17.462 17.589
  3/4 19.050 20 UNEF 17.678 17.957 17.859 17.980
  3/4 19.050 28 UNSF 18.059 18.288 18.257 18.387
  13/6 20.638 12 N 18.339 18.796 18.654 18.789
  13/6 20.638 16 UN 18.923 19.278 19.050 19.182
  13/6 20.638 20 UNEF 19.253 19.558 19.446 19.578
  7/8 22.225 9 UNC 19.177 19.761 19.446 19.578
  7/8 22.225 12 N 19.939 20.396 19.842 19.974
              20.241 20.373
  7/8 22.225 14 UNF 20.269 20.676 20.241 20.373
              20.381 20.513
              20.637 20.769
  7/8 22.225 16 UN 20.498 20.853 20.637 20.772
  7/8 22.225 20 UNEF 20.853 21.133 21.034 21.171
  7/8 22.225 28 UNS 21.234 21.463 21.432 21.572
  15/16 23.812 12 UN 21.514 21.971 21.432 21.572
              21.829 21.971
  15/16 23.812 16 UN 22.098 22.454 22.225 22.370
  15/16 23.812 20 UNEF 22.428 22.733 22.621 22.771
  1 25.400 8 UNCF 21.971 22.606 21.829 21.979
              22.225 22.375
  1 25.400 12 UNF 23.114 23.571 23.017 23.172
              23.416 23.569
  1 25.400 14 NS 23.444 23.825 23.416 23.569
              23.556 23.711
  1 25.400 16 UN 23.673 24.028 23.812 23.970
  1 25.400 20 UNEF 24.028 24.308 24.209 24.369
  1 25.400 28 UNS 24.409 24.638 24.607 24.773
  1 1/16 26.988 12 UN 24.689 25.146 24.607 24.773
              25.004 25.174
  1 1/16 26.988 16 UN 25.273 25.629 25.400 25.575
  1 1/16 26.988 16 NEF 25.451 25.781 25.400 25.575
  1 1/8 28.575 7 UNC 24.638 25.349 24.607 24.765
              25.004 25.174
  1 1/8 28.575 8 N 25.146 25.781 25.400 25.575
  1 1/8 28.575 12 UNF 26.289 26.746 26.192 26.375
              26.591 26.774
  1 1/8 28.575 16 UN 26.848 27.203 26.987 27.175
  1 1/8 28.575 18 NEF 27.051 27.381 26.987
27.384		  
  1 1/8 28.575 20 UNS 27.203 27.483 27.384  
  1 1/8 28.575 28 UNS 27.584 27.813 27.782  
  13/16 30.162 12 UN 27.864 28.321 27.782  
  1 3/16 30.162 16 UN 28.448 28.804 28.575  
  1 3/16 30.162 18 NEF 28.626 28.956 28.575
28.971		  
  1 1/4 31.750 7 UNC 27.813 28.524 27.782  
  1 1/4 31.750 8 N 28.321 28.956 28.575  
  1 1/4 31.750 12 UNF 29.464 29.921 29.367
29.766		  
  1 1/4 31.750 16 UN 30.023 30.378 30.162  
  1 1/4 31.750 18 NEF 30.226 30.556 30.162
30.559		  
  1 1/4 31.750 20 UNS 30.378 30.658 30.559  
  1 5/16 33.338 12 UN 31.039 31.496 30.957
31.354		  
  1 5/16 33.338 16 UN 31.623 31.979 31.750  
  1 5/16 33.338 18 NEF 31.800 32.131 31.750
32.146		  
  1 3/8 34.925 6 UNC 30.353 31.115 30.162
30.559
30.957		  
  1 3/8 34.925 8 N 31.496 32.131 31.354
31.750		  
  1 3/8 34.925 12 UNF 32.639 33.096 32.542
32.941		  
  1 3/8 34.925 16 UN 33.198 33.553 33.337  
  1 3/8 34.925 18 NEF 33.401 33.731 33.337  
  1 3/8 34.925 18 NEF 33.401 33.731 33.734  
  1 7/16 36.512 12 UN 34.214 34.544 34.123  
  1 7/16 36.512 12 UN 34.214 34.544 34.529  
  1 7/16 36.512 16 UN 34.798 35.154 34.925  
  1 7/16 36.512 18 NEF 34.976 35.306 34.925  
  1 1/2 38.100 6 UNC 33.528 34.290 33.337  
  1 1/2 38.100 6 UNC 33.528 34.290 33.734  
  1 1/2 38.100 8 N 34.671 35.306 34.529  
  1 1/2 38.100 8 N 34.671 35.306 34.925  
  1 1/2 38.100 12 UNF 35.814 36.271 35.717  
  1 1/2 38.100 12 UNF 35.814 36.271 36.116  
  1 1/2 38.100 16 UN 36.373 36.728 36.512  
  1 1/2 38.100 18 NEF 36.576 36.881 36.512  
  1 1/2 38.100 20 UNS 36.728 37.008 36.909  
  1 9/16 39.688 16 N 37.973 38.329 38.100  
  1 9/16 39.688 18 NEF 38.151 38.481 38.100  
  1 9/16 39.688 18 NEF 38.151 38.481 38.496  
  1 5/8 41.275 8 N 37.846 38.481 37.704  
  1 5/8 41.275 8 N 37.846 38.481 38.100  
  1 5/8 41.275 12 UN 38.989 39.446 38.892  
  1 5/8 41.275 12 UN 38.989 39.446 39.291  
  1 5/8 41.275 16 UN 39.548 39.903 39.687  
  1 5/8 41.275 18 NEF 39.751 40.081 39.687  
  1 5/8 41.275 18 NEF 39.751 40.081 40..84  
  111/16 42.862 16 N 41.148 41.504 41.275  
  111/16 42.862 18 NEF 41.326 41.656 41.275  
  111/16 42.862 18 NEF 41.326 41.656 41.671  
  1 3/4 44.450 5 UNC 38.964 39.827 38.892  
  1 3/4 44.450 5 UNC 38.964 39.827 39.291  
  1 3/4 44.450 8 N 41.021 41.656 40.879  
  1 3/4 44.450 8 N 41.021 41.656 41.275  
  1 3/4 44.450 8 N 41.021 41.656 41.671  
  1 3/4 44.450 12 UN 42.164 42.621 42.067  
  1 3/4 44.450 12 UN 42.164 42.621 42.466  
  1 3/4 44.450 16 UNEF 42.723 43.078 42.862  
  1 3/4 44.450 20 UNS 43.078 43.358 43.259  
  113/6 46.038 16 N 44.323 44.679 44.450  
  1 7/8 47.625 8 N 44.196 44.831 44.450  
  1 7/8 47.625 12 UN 45.339 45.796 45.242  
  1 7/8 47.625 12 UN 45.339 45.796 45.641  
  1 7/8 47.625 16 UN 45.898 46.253 46.037  
  115/16 49.212 16 N 47.498 47.854 47.625  
  2 50.800 4 1/2 UNC 44.679 45.593 45.242  
  2 50.800 8 N 47.371 48.006 47.625  
  2 50.800 12 UN 48.514 48.971 48.417  
  2 50.800 12 UN 48.514 48.971 48.816  
  2 50.800 16 UNEF 49.073 49.428 49.212  
  2 50.800 12 UN 48.514 48.971 48.816  
  2 50.800 20 UNS 49.428 49.708 49.609  
  2 1/16 52.388 16 N 50.673 51.029 50.800  
  2 1/18 53.975 8 N 50.546 51.181 50.800  
  2 1/18 53.975 12 UN 51.689 52.146 51.592  
  2 1/18 53.975 16 UN 52.248 52.603 52.387  
  2 3/16 53.975 16 N 53.848 54.204 53.975  
  2 1/4 57.150 4 1/2 UNC 51.029 51.943 50.800  
  2 1/4 57.150 4 1/2 UNC 51.029 51.943 51.592  
  2 1/4 57.150 8 N 53.721 54.356 53.975  
  2 1/4 57.150 12 UN 54.864 55.321 54.767  
  2 1/4 57.150 16 UN 55.423 55.778 55.562  
  2 1/4 57.150 20 UNS 55.778 56.058 55.562  
  2 5/16 58.738 16 N 57.023 57.379 57.150  
  2 3/8 60.325 12 UN 58.039 58.496    
  2 3/8 60.325 16 UN 58.598 58.953 58.737  
  2 7/16 61.912 16 N 60.198 60.554 60.325  
  2 1/2 63.500 4 UNC 56.617 57.582 56.357  
  2 1/2 63.500 4 UNC 56.617 57.582 57.150  
  2 1/2 63.500 8 N 60.071 60.706 60.325  
  2 1/2 63.500 12 UN 61.214 61.676    
  2 1/2 63.500 16 UN 61.773 62.128 61.912  
  2 5/8 66.675 12 UN 64.389 64.846    
  2 5/8 66.675 16 UN 64.948 65.303 65.087  
  2 3/4 69.850 4 UNC 62.967 63.932 63.500  
  2 3/4 69.850 8 N 66.421 67.056 66.675  
  2 3/4 69.850 12 UN 67.564 68.021    
  2 3/4 69.850 16 UN 68.123 68.478 68.262  
  2 7/8 73.025 12 UN 70.739 71.196 69.850  
  2 7/8 73.025 16 UN 71.298 71.653 71.437  
  3 76.200 4 UNC 69.317 70.282 69.850  
  3 76.200 8 N 72.771 73.406 73.025  
  3 76.200 12 UN 73.914 74.371    
  3 76.200 16 UN 74.473 74.828 74.612  
  3 1/4 82.550 4 UNC 75.667 76.632 76.200  
  3 1/2 88.900 4 UNC 82.017 82.982 82.550  
  3 3/4 95.250 4 UNC 88.367 89.332 88.900