DTH Adaptors
Drill String Adaptor Subs are available in a wide range of diameters, lengths, wrenching, and thread size/types.
North Star understands the need to have a versatile range of configurations to connect your drill rods together. We have a wide range of certified thread gages available to accommodate all your configuration needs.
Specifications
Click titles to expand tables
Standard Adaptor Subs
Diameter (mm) Diameter (in) Length (mm) Length (in)s Box Thread Pin Thread Wrench Flat Width (mm) Wrench Flat Width (in)
76 3 100 3.94 2 3/8" API 2 3/8" API A/F65 2.5
76 3 130 5.12 2 3/8" API 2 3/8" API A/F65 2.5
76 3 160 6.30 2 3/8" API 2 3/8" API A/F65 2.5
76 3 180 7.09 2 3/8" API 2 3/8" API A/F65 2.5
76 3 200 7.87 2 3/8" API 2 3/8" API A/F65 2.5
76 3 220 8.66 2 3/8" API 2 3/8" API A/F65 2.5
76 3 250 9.84 2 3/8" API 2 3/8" API A/F65 2.5
76 3 260 10.24 2 3/8" API 2 3/8" API A/F65 2.5
76 3 280 11.02 2 3/8" API 2 3/8" API A/F65 2.5
76 3 300 11.81 2 3/8" API 2 3/8" API A/F65 2.5
76 3 320 12.60 2 3/8" API 2 3/8" API A/F65 2.5
76 3 340 13.39 2 3/8" API 2 3/8" API A/F65 2.5
76 3 360 14.17 2 3/8" API 2 3/8" API A/F65 2.5
76 3 380 14.96 2 3/8" API 2 3/8" API A/F65 2.5
76 3 400 15.75 2 3/8" API 2 3/8" API A/F65 2.5
76 3 420 16.54 2 3/8" API 2 3/8" API A/F65 2.5
76 3 440 17.32 2 3/8" API 2 3/8" API A/F65 2.5
76 3 460 18.11 2 3/8" API 2 3/8" API A/F65 2.5
76 3 500 19.68 2 3/8" API 2 3/8" API A/F65 2.5
76 3 520 20.47 2 3/8" API 2 3/8" API A/F65 2.5
76 3 540 21.26 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 100 3.94 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 130 5.12 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 170 6.69 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 200 7.87 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 220 8.66 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 250 9.84 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 270 10.63 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 300 11.81 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 320 12.60 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 350 13.78 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 380 14.96 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 400 15.75 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 430 16.93 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 450 17.72 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 480 18.90 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 500 19.68 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 530 20.87 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 550 21.65 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 580 22.83 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 600 23.62 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 650 25.59 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 680 26.77 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 700 27.56 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 730 28.74 2 3/8" IF 2 3/8" IF A/F65 2.5
89 3.50 750 29.53 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 780 30.71 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 810 31.89 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 830 32.68 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 860 33.86 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 880 34.65 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 910 35.83 2 3/8" API 2 3/8" API A/F65 2.5
89 3.50 930 36.61 2 3/8" API 2 3/8" API A/F65 2.5
102 4 120 4.72 2 3/8" IF 2 3/8" IF A/F75 3
102 4 140 5.51 2 3/8" IF 2 3/8" IF A/F75 3
102 4 180 7.09 2 7/8" API 2 7/8" API A/F75 3
102 4 210 8.27 2 3/8" API 2 3/8" API A/F75 3
102 4 300 11.81 2 3/8" IF 2 3/8" IF A/F75 3
102 4 360 14.17 2 7/8" API 2 7/8" API A/F75 3
102 4 410 16.14 3 1/2" API 3 1/2" API A/F75 3
102 4 480 18.90 3 1/2" API 3 1/2" API A/F65 3
102 4 520 20.47 2 7/8" API 2 7/8" API A/F75 3
102 4 600 23.62 2 7/8" API 2 7/8" API A/F75 3
102 4 660 25.98 3 1/2" API 3 1/2" API A/F75 3
102 4 700 27.56 2 7/8" IF 2 7/8" IF A/F75 3
114 4.50 120 4.72 3 1/2" API 3 1/2" API A/F75 3
114 4.50 140 5.51 3 1/2" API 3" BECO A/F75 3
114 4.50 180 7.09 3 1/2" API 3 1/2" API A/F75 3
114 4.50 210 8.27 3" BECO 3" BECO A/F90 3.5
114 4.50 300 11.81 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 360 14.17 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 410 16.14 2 3/8" IF 2 7/8" IF A/F95 3.75
114 4.50 480 18.90 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 520 20.47 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 600 23.62 2 3/8" API 2 3/8" API A/F95 3.75
114 4.50 660 25.98 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 700 27.56 3 1/2" IF 3 1/2" IF A/F95 3.75
114 4.50 740 29.13 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 790 31.10 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 820 32.38 3 1/2" IF 3 1/2" IF A/F95 3.75
114 4.50 850 33.46 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 880 34.65 3 1/2" API 3 1/2" API A/F95 3.75
114 4.50 910 35.83 3 1/2" IF 3 1/2" IF A/F95 3.75
114 4.50 940 37.01 2 7/8" API 2 7/8" API A/F95 3.75
114 4.50 970 38.19 NC35 NC35 A/F95 3.75
127 5 300 11,81 3 1/2" API 3 1/2" API A/F95 3.75
127 5 360 14,17 3 1/2" API 3 1/2" API A/F95 3.75
127 5 410 16.14 3 1/2" API 3 1/2" API A/F95 3.75
127 5 480 18.90 3 1/2" API 3 1/2" API A/F95 3.75
127 5 520 20.47 3 1/2" API 3 1/2" API A/F95 3.75
127 5 600 23.62 3 1/2" API 3 1/2" API A/F95 4.75
127 5 700 27.56 3 1/2" API 3 1/2" API A/F95 5.75
127 5 820 32.28 3 1/2" API 3 1/2" API A/F95 6.75
127 5 910 35.83 3 1/2" API 3 1/2" API A/F95 7.75
140 5.50 300 11.81 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 360 14.17 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 410 16.14 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 460 18.11 3 1/2" API 3 1/2" API A/F120 4.75
140 5.50 520 20.47 3 1/2" API 3 1/2" API A/F120 4.75
140 5.50 600 23.62 3 1/2" IF 3 1/2" IF A/F120 4.75
140 5.50 700 27.56 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 730 28.74 3 1/2" API 3 1/2" API A/F120 4.75
140 5.50 750 29.53 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 780 30.71 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 820 32.28 3 1/2" API 3 1/2" API A/F120 4.75
140 5.50 850 33.46 3 1/2" API 3 1/2" API A/F120 4.75
140 5.50 870 34.25 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 900 35.43 4 1/2" API 4 1/2" API A/F120 4.75
140 5.50 920 36.22 3 1/2" API 3 1/2" API A/F120 4.75
Standard Adaptor Subs
| Diameter (mm) | Diameter (in) | Length (mm) | Length (in)s | Box Thread | Pin Thread | Wrench Flat Width (mm) | Wrench Flat Width (in) |
|---|---|---|---|---|---|---|---|
| 76 | 3 | 100 | 3.94 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 130 | 5.12 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 160 | 6.30 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 180 | 7.09 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 200 | 7.87 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 220 | 8.66 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 250 | 9.84 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 260 | 10.24 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 280 | 11.02 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 300 | 11.81 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 320 | 12.60 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 340 | 13.39 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 360 | 14.17 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 380 | 14.96 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 400 | 15.75 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 420 | 16.54 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 440 | 17.32 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 460 | 18.11 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 500 | 19.68 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 520 | 20.47 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 76 | 3 | 540 | 21.26 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 100 | 3.94 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 130 | 5.12 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 170 | 6.69 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 200 | 7.87 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 220 | 8.66 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 250 | 9.84 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 270 | 10.63 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 300 | 11.81 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 320 | 12.60 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 350 | 13.78 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 380 | 14.96 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 400 | 15.75 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 430 | 16.93 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 450 | 17.72 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 480 | 18.90 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 500 | 19.68 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 530 | 20.87 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 550 | 21.65 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 580 | 22.83 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 600 | 23.62 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 650 | 25.59 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 680 | 26.77 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 700 | 27.56 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 730 | 28.74 | 2 3/8" IF | 2 3/8" IF | A/F65 | 2.5 |
| 89 | 3.50 | 750 | 29.53 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 780 | 30.71 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 810 | 31.89 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 830 | 32.68 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 860 | 33.86 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 880 | 34.65 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 910 | 35.83 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 89 | 3.50 | 930 | 36.61 | 2 3/8" API | 2 3/8" API | A/F65 | 2.5 |
| 102 | 4 | 120 | 4.72 | 2 3/8" IF | 2 3/8" IF | A/F75 | 3 |
| 102 | 4 | 140 | 5.51 | 2 3/8" IF | 2 3/8" IF | A/F75 | 3 |
| 102 | 4 | 180 | 7.09 | 2 7/8" API | 2 7/8" API | A/F75 | 3 |
| 102 | 4 | 210 | 8.27 | 2 3/8" API | 2 3/8" API | A/F75 | 3 |
| 102 | 4 | 300 | 11.81 | 2 3/8" IF | 2 3/8" IF | A/F75 | 3 |
| 102 | 4 | 360 | 14.17 | 2 7/8" API | 2 7/8" API | A/F75 | 3 |
| 102 | 4 | 410 | 16.14 | 3 1/2" API | 3 1/2" API | A/F75 | 3 |
| 102 | 4 | 480 | 18.90 | 3 1/2" API | 3 1/2" API | A/F65 | 3 |
| 102 | 4 | 520 | 20.47 | 2 7/8" API | 2 7/8" API | A/F75 | 3 |
| 102 | 4 | 600 | 23.62 | 2 7/8" API | 2 7/8" API | A/F75 | 3 |
| 102 | 4 | 660 | 25.98 | 3 1/2" API | 3 1/2" API | A/F75 | 3 |
| 102 | 4 | 700 | 27.56 | 2 7/8" IF | 2 7/8" IF | A/F75 | 3 |
| 114 | 4.50 | 120 | 4.72 | 3 1/2" API | 3 1/2" API | A/F75 | 3 |
| 114 | 4.50 | 140 | 5.51 | 3 1/2" API | 3" BECO | A/F75 | 3 |
| 114 | 4.50 | 180 | 7.09 | 3 1/2" API | 3 1/2" API | A/F75 | 3 |
| 114 | 4.50 | 210 | 8.27 | 3" BECO | 3" BECO | A/F90 | 3.5 |
| 114 | 4.50 | 300 | 11.81 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 360 | 14.17 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 410 | 16.14 | 2 3/8" IF | 2 7/8" IF | A/F95 | 3.75 |
| 114 | 4.50 | 480 | 18.90 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 520 | 20.47 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 600 | 23.62 | 2 3/8" API | 2 3/8" API | A/F95 | 3.75 |
| 114 | 4.50 | 660 | 25.98 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 700 | 27.56 | 3 1/2" IF | 3 1/2" IF | A/F95 | 3.75 |
| 114 | 4.50 | 740 | 29.13 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 790 | 31.10 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 820 | 32.38 | 3 1/2" IF | 3 1/2" IF | A/F95 | 3.75 |
| 114 | 4.50 | 850 | 33.46 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 880 | 34.65 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 114 | 4.50 | 910 | 35.83 | 3 1/2" IF | 3 1/2" IF | A/F95 | 3.75 |
| 114 | 4.50 | 940 | 37.01 | 2 7/8" API | 2 7/8" API | A/F95 | 3.75 |
| 114 | 4.50 | 970 | 38.19 | NC35 | NC35 | A/F95 | 3.75 |
| 127 | 5 | 300 | 11,81 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 127 | 5 | 360 | 14,17 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 127 | 5 | 410 | 16.14 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 127 | 5 | 480 | 18.90 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 127 | 5 | 520 | 20.47 | 3 1/2" API | 3 1/2" API | A/F95 | 3.75 |
| 127 | 5 | 600 | 23.62 | 3 1/2" API | 3 1/2" API | A/F95 | 4.75 |
| 127 | 5 | 700 | 27.56 | 3 1/2" API | 3 1/2" API | A/F95 | 5.75 |
| 127 | 5 | 820 | 32.28 | 3 1/2" API | 3 1/2" API | A/F95 | 6.75 |
| 127 | 5 | 910 | 35.83 | 3 1/2" API | 3 1/2" API | A/F95 | 7.75 |
| 140 | 5.50 | 300 | 11.81 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 360 | 14.17 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 410 | 16.14 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 460 | 18.11 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 520 | 20.47 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 600 | 23.62 | 3 1/2" IF | 3 1/2" IF | A/F120 | 4.75 |
| 140 | 5.50 | 700 | 27.56 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 730 | 28.74 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 750 | 29.53 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 780 | 30.71 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 820 | 32.28 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 850 | 33.46 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 870 | 34.25 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 900 | 35.43 | 4 1/2" API | 4 1/2" API | A/F120 | 4.75 |
| 140 | 5.50 | 920 | 36.22 | 3 1/2" API | 3 1/2" API | A/F120 | 4.75 |