UN Multitooth 30° Helical Thread Mill
Scientific Cutting Tools (SCT) is a family-owned business dedicated to manufacturing high-performance cutting tools, all proudly made in the USA. Our UN multi-tooth 30° helical thread mills provide exceptional speed and precision, combining a multi-tooth configuration for fast threading with a 30° helical flute to reduce side cutting pressure. The non-crest cutting design on internal threads allows maximum flexibility for plated and non-standard threads, ensuring a perfect fit every time. Crafted from premium sub-micron carbide, these tools deliver superior wear resistance and extended tool life. Explore our selection to optimize your threading applications.
| Minimum ID Thread/Pitch | A (Tool Diameter) | B (Length of Cut) | Q (Length) | S (Shank Diameter) | OAL | Flutes | Uncoated Tool # | Uncoated EDP # | AlTiN+ EDP # |
|---|---|---|---|---|---|---|---|---|---|
| 4-40 | 0.079 | 0.185 | 0.011 | 0.2500 | 2.5 | 2 | TMI079-40H | 102901 | 102937 |
| 6-32 | 0.100 | 0.263 | 0.014 | 0.2500 | 2.5 | 3 | TMI100-32H | 102904 | 102940 |
| 8-32 | 0.115 | 0.263 | 0.014 | 0.2500 | 2.5 | 3 | TMI115-32H | 102907 | 102943 |
| 10-24 | 0.120 | 0.351 | 0.019 | 0.2500 | 2.5 | 3 | TMI120-24H | 102910 | 102946 |
| 10-28 | 0.120 | 0.336 | 0.016 | 0.2500 | 2.5 | 3 | TMI120-28H | 102913 | 102949 |
| 10-32 | 0.120 | 0.326 | 0.014 | 0.2500 | 2.5 | 3 | TMI120-32H | 102916 | 102952 |
| 1/4-20 | 0.180 | 0.521 | 0.023 | 0.2500 | 2.5 | 3 | TMI180-20H | 102919 | 102955 |
| 1/4-28 | 0.180 | 0.515 | 0.016 | 0.2500 | 2.5 | 3 | TMI180-28H | 102922 | 102958 |
| 5/16-18 | 0.234 | 0.632 | 0.025 | 0.2500 | 2.5 | 3 | TMI234-18H | 102925 | 102961 |
| 5/16-24 | 0.234 | 0.641 | 0.019 | 0.2500 | 2.5 | 3 | TMI234-24H | 102928 | 102964 |
| 5/16-32 | 0.234 | 0.638 | 0.014 | 0.2500 | 2.5 | 3 | TMI234-32H | 102931 | 102967 |
| 5/16-40 | 0.234 | 0.635 | 0.011 | 0.2500 | 2.5 | 3 | TMI234-40H | 102934 | 102970 |
| 3/8-16 | 0.285 | 0.775 | 0.028 | 0.3125 | 3 | 4 | TMI285-16H | 102973 | 102988 |
| 3/8-20 | 0.285 | 0.770 | 0.023 | 0.3125 | 3 | 4 | TMI285-20H | 102976 | 102991 |
| 3/8-24 | 0.285 | 0.766 | 0.019 | 0.3125 | 3 | 4 | TMI285-24H | 102979 | 102994 |
| 3/8-32 | 0.285 | 0.763 | 0.014 | 0.3125 | 3 | 4 | TMI285-32H | 102982 | 102997 |
| 7/16-14 | 0.305 | 0.886 | 0.032 | 0.3125 | 3 | 4 | TMI305-14H | 102985 | 103000 |
| 7/16-18 | 0.335 | 0.888 | 0.025 | 0.3750 | 3 | 4 | TMI335-18H | 103003 | 103021 |
| 7/16-20 | 0.335 | 0.870 | 0.023 | 0.3750 | 3 | 4 | TMI335-20H | 103006 | 103024 |
| 1/2-13 | 0.350 | 0.877 | 0.035 | 0.3750 | 3 | 4 | TMI350-13H | 103009 | 103027 |
| 9/16-12 | 0.370 | 0.867 | 0.038 | 0.3750 | 3 | 4 | TMI370-12H | 103012 | 103030 |
| 9/16-18 | 0.370 | 0.911 | 0.025 | 0.3750 | 3 | 4 | TMI370-18H | 103015 | 103033 |
| 9/16-32 | 0.370 | 0.888 | 0.014 | 0.3750 | 3 | 4 | TMI370-32H | 103018 | 103036 |
| 5/8-11 | 0.470 | 1.309 | 0.041 | 0.5000 | 4 | 4 | TMI470-11H | 103039 | 103063 |
| 3/4-10 | 0.495 | 1.340 | 0.045 | 0.5000 | 4 | 4 | TMI495-10H | 103042 | 103066 |
| 3/4-12 | 0.495 | 1.283 | 0.038 | 0.5000 | 4 | 4 | TMI495-12H | 103045 | 103069 |
| 3/4-14 | 0.495 | 1.314 | 0.032 | 0.5000 | 4 | 4 | TMI495-14H | 103048 | 103072 |
| 3/4-16 | 0.495 | 1.338 | 0.028 | 0.5000 | 4 | 4 | TMI495-16H | 103051 | 103075 |
| 3/4-18 | 0.495 | 1.300 | 0.025 | 0.5000 | 4 | 4 | TMI495-18H | 103054 | 103078 |
| 3/4-20 | 0.495 | 1.320 | 0.023 | 0.5000 | 4 | 4 | TMI495-20H | 103057 | 103081 |
| 3/4-32 | 0.495 | 1.325 | 0.014 | 0.5000 | 4 | 4 | TMI495-32H | 103060 | 103084 |
| 7/8-9 | 0.620 | 1.489 | 0.049 | 0.6250 | 4 | 5 | TMI620-9H | 103099 | 103114 |
| 1.0-8 | 0.620 | 1.550 | 0.056 | 0.6250 | 4 | 5 | TMI620-8H | 103096 | 103111 |
| 1.0-12 | 0.620 | 1.534 | 0.038 | 0.6250 | 4 | 5 | TMI620-12H | 103087 | 103102 |
| 1.0-14 | 0.620 | 1.529 | 0.032 | 0.6250 | 4 | 5 | TMI620-14H | 103090 | 103105 |
| 1.0-16 | 0.620 | 1.525 | 0.028 | 0.6250 | 4 | 5 | TMI620-16H | 103093 | 103108 |