MS21921 Port Tool
Scientific Cutting Tools’ MS21921 Port Tool is engineered for consistent, high-quality results in aerospace and hydraulic porting applications. Built with a heat-treated alloy steel body and carbide flutes made from premium submicron carbide, this tool delivers exceptional wear resistance and accuracy. It is precision ground for maximum concentricity and features a polished flute face for clean finishes and efficient chip evacuation. An optional AlTiN+ coating further extends tool life and supports higher cutting speeds—making it a reliable solution for critical machining environments.
| D1 | D2 | D3 | D4 | L1 | L2 | S | SL | OAL | Flutes | Tube | Thread | Tool # | Uncoated EDP # | AlTiN+ EDP # |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.400 | 0.334 | 0.277 | 0.173 | 0.425 | 0.575 | 0.500 | 1.75 | 3.00 | 3 | 0.125 | 0.3125-24 UNJF-3B | MS21921-2* | 403310 | 403363 |
| 0.475 | 0.396 | 0.338 | 0.234 | 0.429 | 0.625 | 0.500 | 1.75 | 3.00 | 3 | 0.187 | 0.3750-24 UNJF-3B | MS21921-3* | 403316 | 403366 |
| 0.600 | 0.460 | 0.393 | 0.302 | 0.547 | 0.750 | 0.500 | 1.75 | 3.00 | 3 | 0.250 | 0.4375-20 UNJF-3B | MS21921-4 | 403319 | 403369 |
| 0.675 | 0.520 | 0.455 | 0.368 | 0.562 | 0.790 | 0.500 | 1.75 | 3.00 | 3 | 0.312 | 0.5000-20 UNJF-3B | MS21921-5 | 403322 | 403372 |
| 0.750 | 0.582 | 0.513 | 0.427 | 0.578 | 0.830 | 0.500 | 1.75 | 3.13 | 4 | 0.375 | 0.5625-18 UNJF-3B | MS21921-6 | 403325 | 403375 |
| 0.900 | 0.770 | 0.693 | 0.554 | 0.609 | 0.800 | 0.500 | 1.75 | 3.50 | 4 | 0.500 | 0.7500-16 UNJF-3B | MS21921-8 | 403328 | 403378 |
| 1.050 | 0.895 | 0.810 | 0.692 | 0.687 | 1.010 | 0.750 | 2.00 | 3.75 | 4 | 0.625 | 0.8750-14 UNJF-3B | MS21921-10 | 403301 | 403351 |
| 1.300 | 1.082 | 0.987 | 0.828 | 0.687 | 1.030 | 0.750 | 2.13 | 4.00 | 4 | 0.750 | 1.0625-12 UNJF-3B | MS21921-12 | 403304 | 403354 |
| 1.550 | 1.332 | 1.236 | 1.076 | 0.687 | 1.080 | 1.000 | 2.25 | 4.25 | 4 | 1.000 | 1.3125-12 UNJF-3B | MS21921-16 | 403307 | 403357 |
| 2.050 | 1.645 | 1.549 | 1.332 | 0.678 | 1.080 | 1.000 | 2.38 | 4.50 | 4 | 1.250 | 1.6250-12 UNJF-3B | MS21921-20 | 403313 | 403360 |
*Solid Carbide