
in selecting the best tap for the job.
| 10 mm/min | 120° | 1/16" | 1000 lb | 10 mm/min | 120° | 1/16" | 1000 lb | ||
| ball | cone | ball | per | ball | cone | ball | per | ||
| 3000 kg | 150 kg | 100 kg | model C | sq. in. | 3000 kg | 150 kg | 100 kg | model C | sq. in. |
| Shore | tensile | Shore | tensile | ||||||
| Brinell | Rockwell C | Rockwell B | Scleroscope | strength | Brinell | Rockwell C | Rockwell B | Scleroscope | strength |
| 800 | 72 | – | 100 | – | 276 | 30 | 105 | 42 | 136 |
| 780 | 71 | – | 99 | – | 269 | 29 | 104 | 41 | 132 |
| 760 | 70 | – | 98 | – | 261 | 28 | 103 | 40 | 129 |
| 745 | 68 | – | 97 | 367 | 258 | 27 | 102 | 39 | 127 |
| 725 | 67 | – | 96 | 357 | 255 | 26 | 102 | 39 | 125 |
| 712 | 66 | – | 95 | 350 | 249 | 25 | 101 | 38 | 123 |
| 682 | 65 | – | 93 | 337 | 245 | 24 | 100 | 37 | 119 |
| 668 | 64 | – | 91 | 326 | 240 | 23 | 99 | 36 | 117 |
| 652 | 63 | – | 89 | 318 | 237 | 23 | 99 | 35 | 115 |
| 626 | 62 | – | 87 | 306 | 229 | 22 | 98 | 34 | 113 |
| 614 | 61 | – | 85 | 299 | 224 | 21 | 97 | 33 | 110 |
| 601 | 60 | – | 83 | 292 | 217 | 20 | 96 | 33 | 107 |
| 590 | 59 | – | 81 | 290 | 211 | 19 | 95 | 32 | 104 |
| 576 | 57 | – | 79 | 281 | 206 | 18 | 94 | 32 | 102 |
| 552 | 56 | – | 76 | 270 | 203 | 17 | 94 | 31 | 100 |
| 545 | 55 | – | 75 | 268 | 200 | 16 | 93 | 31 | 98 |
| 529 | 54 | – | 74 | 259 | 196 | 15 | 92 | 30 | 96 |
| 514 | 53 | 120 | 72 | 254 | 191 | 14 | 92 | 30 | 94 |
| 502 | 52 | 119 | 70 | 247 | 187 | 13 | 91 | 29 | 92 |
| 495 | 51 | 119 | 69 | 244 | 185 | 12 | 91 | 29 | 91 |
| 477 | 49 | 118 | 67 | 233 | 183 | 11 | 90 | 28 | 90 |
| 461 | 48 | 117 | 66 | 227 | 180 | 10 | 89 | 28 | 89 |
| 451 | 47 | 117 | 65 | 223 | 175 | 9 | 88 | 27 | 86 |
| 444 | 46 | 116 | 64 | 219 | 170 | 7 | 87 | 27 | 84 |
| 427 | 46 | 115 | 62 | 209 | 167 | 6 | 87 | 27 | 82 |
| 415 | 44 | 115 | 60 | 204 | 165 | 5 | 86 | 26 | 81 |
| 401 | 43 | 114 | 58 | 196 | 163 | 4 | 85 | 26 | 80 |
| 388 | 42 | 114 | 57 | 191 | 160 | 3 | 84 | 25 | 78 |
| 375 | 41 | 113 | 55 | 184 | 156 | 2 | 83 | 25 | 76 |
| 370 | 40 | 112 | 54 | 182 | 154 | 1 | 82 | 25 | 75 |
| 362 | 39 | 111 | 53 | 179 | 152 | – | 82 | 24 | 74 |
| 351 | 38 | 111 | 51 | 173 | 150 | – | 81 | 24 | 74 |
| 346 | 37 | 110 | 50 | 170 | 147 | – | 80 | 24 | 72 |
| 341 | 37 | 110 | 49 | 168 | 145 | – | 79 | 23 | 71 |
| 331 | 36 | 109 | 47 | 163 | 143 | – | 79 | 23 | 70 |
| 323 | 35 | 109 | 46 | 158 | 141 | – | 78 | 23 | 69 |
| 311 | 34 | 108 | 46 | 153 | 140 | – | 77 | 22 | 69 |
| 301 | 33 | 107 | 45 | 148 | 135 | – | 75 | 22 | 67 |
| 293 | 32 | 106 | 44 | 144 | 130 | – | 72 | 22 | 65 |
| 285 | 31 | 105 | 43 | 140 | – | – | – | – | – |