BaerCoil® Wire Thread Inserts UNC
UNC - Unified Coarse Thread
| 1.0 D | 1.5 D | 2.0 D | 2.5 D | 3.0 D | F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | D | B | T | D | B | T | D | B | T | D | B | T | D | B | min. | max. | |
| UNC 2 x 56 | 0.086 | 0.166 | 0.148 | 0.129 | 0.209 | 0.191 | 0.172 | 0.252 | 0.234 | 0.215 | 0.295 | 0.277 | 0.258 | 0.338 | 0.320 | 0.110 | 0.119 |
| UNC 3 x 48 | 0.099 | 0.193 | 0.172 | 0.148 | 0.242 | 0.221 | 0.198 | 0.292 | 0.271 | 0.248 | 0.342 | 0.321 | 0.297 | 0.391 | 0.370 | 0.128 | 0.139 |
| UNC 4 x 40 | 0.112 | 0.224 | 0.199 | 0.168 | 0.280 | 0.255 | 0.224 | 0.336 | 0.311 | 0.280 | 0.392 | 0.367 | 0.336 | 0.448 | 0.423 | 0.144 | 0.159 |
| UNC 5 x 40 | 0.125 | 0.237 | 0.212 | 0.187 | 0.300 | 0.275 | 0.250 | 0.362 | 0.337 | 0.312 | 0.425 | 0.400 | 0.375 | 0.487 | 0.462 | 0.158 | 0.173 |
| UNC 6 x 32 | 0.138 | 0.279 | 0.247 | 0.207 | 0.348 | 0.316 | 0.276 | 0.417 | 0.385 | 0.345 | 0.486 | 0.454 | 0.414 | 0.555 | 0.523 | 0.178 | 0.193 |
| UNC 8 x 32 | 0.164 | 0.305 | 0.273 | 0.246 | 0.387 | 0.355 | 0.328 | 0.469 | 0.437 | 0.410 | 0.551 | 0.519 | 0.492 | 0.633 | 0.601 | 0.205 | 0.220 |
| UNC 10 x 24 | 0.190 | 0.377 | 0.336 | 0.285 | 0.472 | 0.431 | 0.380 | 0.567 | 0.526 | 0.475 | 0.662 | 0.621 | 0.570 | 0.757 | 0.716 | 0.244 | 0.259 |
| UNC 12 x 24 | 0.216 | 0.404 | 0.362 | 0.324 | 0.512 | 0.470 | 0.432 | 0.620 | 0.578 | 0.540 | 0.727 | 0.686 | 0.648 | 0.836 | 0.794 | 0.270 | 0.285 |
| UNC 1/4 x 20 | 0.250 | 0.475 | 0.425 | 0.375 | 0.600 | 0.550 | 0.500 | 0.725 | 0.675 | 0.625 | 0.850 | 0.800 | 0.750 | 0.975 | 0.925 | 0.310 | 0.330 |
| UNC 5/16 x 18 | 0.312 | 0.562 | 0.507 | 0.469 | 0.719 | 0.663 | 0.625 | 0.875 | 0.819 | 0.781 | 1.031 | 0.976 | 0.937 | 1.187 | 1.132 | 0.380 | 0.400 |
| UNC 3/8 x 16 | 0.375 | 0.656 | 0.594 | 0.562 | 0.844 | 0.781 | 0.750 | 1.031 | 0.969 | 0.937 | 1.219 | 1.156 | 1.125 | 1.406 | 1.344 | 0.452 | 0.472 |
| UNC 7/16 x 14 | 0.437 | 0.759 | 0.687 | 0.656 | 0.978 | 0.906 | 0.875 | 1.196 | 1.125 | 1.094 | 1.415 | 1.343 | 1.312 | 1.634 | 1.562 | 0.526 | 0.551 |
| UNC 1/2 x 13 | 0.500 | 0.846 | 0.769 | 0.750 | 1.096 | 1.019 | 1.000 | 1.346 | 1.269 | 1.250 | 1.596 | 1.519 | 1.500 | 1.846 | 1.769 | 0.597 | 0.622 |
| UNC 9/16 x 12 | 0.562 | 0.937 | 0.854 | 0.844 | 1.219 | 1.135 | 1.125 | 1.500 | 1.417 | 1.406 | 1.781 | 1.698 | 1.687 | 2.062 | 1.979 | 0.699 | 0.694 |
| UNC 5/8 x 11 | 0.625 | 1.034 | 0.943 | 0.937 | 1.347 | 1.256 | 1.250 | 1.659 | 1.568 | 1.562 | 1.972 | 1.881 | 1.875 | 2.284 | 2.193 | 0.742 | 0.767 |
| UNC 3/4 x 10 | 0.750 | 1.200 | 1.100 | 1.125 | 1.575 | 1.475 | 1.500 | 1.950 | 1.850 | 1.875 | 2.325 | 2.225 | 2.250 | 2.700 | 2.600 | 0.881 | 0.906 |
| UNC 7/8 x 9 | 0.875 | 1.375 | 1.264 | 1.312 | 1.812 | 1.701 | 1.750 | 2.250 | 2.139 | 2.187 | 2.687 | 2.576 | 2.625 | 3.125 | 3.014 | 1.022 | 1.052 |
| UNC 1“ x 8 | 1.000 | 1.563 | 1.437 | 1.500 | 2.062 | 1.937 | 2.000 | 2.562 | 2.437 | 2.500 | 3.062 | 2.937 | 3.000 | 3.562 | 3.437 | 1.166 | 1.196 |
| UNC 1.1/8“ x 7 | 1.125 | 1.768 | 1.625 | 1.687 | 2.330 | 2.187 | 2.250 | 2.893 | 2.750 | 2.812 | 3.455 | 3.312 | 3.375 | 4.018 | 3.875 | 1.315 | 1.355 |
| UNC 1.1/4“ x 7 | 1.250 | 1.893 | 1.750 | 1.875 | 2.518 | 2.375 | 2.500 | 3.143 | 3.000 | 3.125 | 3.768 | 3.625 | 3.750 | 4.393 | 4.250 | 1.443 | 1.483 |
| UNC 1.3/8“ x 6 | 1.375 | 2.125 | 1.958 | 2.062 | 2.812 | 2.646 | 2.750 | 3.500 | 3.333 | 3.437 | 4.187 | 4.021 | 4.125 | 4.875 | 4.708 | 1.598 | 1.643 |
| UNC 1.1/2“ x 6 | 1.500 | 2.250 | 2.083 | 2.250 | 3.000 | 2.833 | 3.000 | 3.750 | 3.583 | 3.750 | 4.500 | 4.333 | 4.500 | 5.250 | 5.083 | 1.727 | 1.772 |
Acronyms
P = Install insert 1/4 - 1/2 pitch below the surface
T = Full tapped thread length (min.)
B = Tap depth - including threads chamfer of plug tap
D = Drill depth (min.) - excluding point
F = Free Coil Diameter