GB/T 1438.1-1996      Diameter    Flute length Total length Shank No. diameter Flute length Total length Shank No 7.00 69 150 1 17.75 130 228 2 7.20 69 150 18.00 130 228 7.50 69 150 18.25 135 233 7.80 75 156 18.50 135 233 8.00 75 156 18.75 135 233 8.20 75 156 19.00 135 233 8.50 75 156 19.25 140 238 8.80 81 162 19.50 140 238 9.00 81 162 19.75 140 238 9.20 81 162 20.00 140 238 9.50 81 162 20.25 145 243 9.80 87 168 20.50 145 243 10.00 87 168 20.75 145 243 10.20 87 168 21.00 145 243 10.50 87 168 21.25 150 248 10.80 94 175 21.50 150 248 11.00 94 175 21.75 150 248 11.20 94 175 22.00 150 248 11.50 94 175 22.25 150 248 11.80 94 175 22.50 155 253 12.00 101 182 22.75 155 253 12.20 101 182 23.00 155 253 12.50 101 182 23.25 155 276 3 12.80 101 182 23.50 155 276 13.00 101 182 23.75 160 281 13.20 101 182 24.00 160 281 13.50 108 189 24.25 160 281 13.80 108 189 24.50 160 281 14.00 108 189 24.75 160 281 14.25 114 212 2 25.00 160 281 14.50 114 212 25.25 165 286 14.75 114 212 25.50 165 286 15.00 114 212 25.75 165 286 15.25 120 218 26.00 165 286 15.50 120 218 26.25 165 286 15.75 120 218 26.50 165 286 16.00 120 218 26.75 170 291 16.25 125 223 27.00 170 291 16.50 125 223 27.25 170 291 16.75 125 223 27.50 170 291 17.00 125 223 27.75 170 291 17.25 130 228 28.00 170 291 17.50 130 228 28.25 175 296   diameter Flute length Total length Shank No. diameter Flute length Total length Shank No. 28.50 175 296 3 46.50 215 364 4 28.75 175 296 47.00 215 364 29.00 175 296 47.50 215 364 29.25 175 296 48.00 220 369 29.50 175 296 48.50 220 369 29.75 175 296 49.00 220 369 30.00 175 296 49.50 220 369 30.25 180 301 50.00 220 369 30.50 180 301 50.50 225 374 30.75 180 301 51.00 225 412 5 31.00 180 301 52.00 225 412 31.25 180 301 53.00 225 412 31.50 180 301 54.00 230 417 31.75 185 306 55.00 230 417 32.00 185 334 4 56.00 230 417 32.50 185 334 57.00 235 422 33.00 185 334 58.00 235 422 33.50 185 334 59.00 235 422 34.00 190 339 60.00 235 422 34.50 190 339 61.00 240 427 35.00 190 339 62.00 240 427 35.50 190 339 63.00 240 427 36.00 195 344 64.00 245 432 36.50 195 344 65.00 245 432 37.00 195 344 66.00 245 432 37.50 195 344 67.00 245 432 38.00 200 349 68.00 250 437 38.50 200 349 69.00 250 437 39.00 200 349 70.00 250 437 39.50 200 349 71.00 250 437 40.00 200 349 72.00 255 442 40.50 205 354 73.00 255 442 41.00 205 354 74.00 255 442 41.50 205 354 75.00 255 442 42.00 205 354 76.00 260 447 42.50 205 354 75.00 260 514 6 43.00 210 359 78.00 260 514 43.50 210 359 79.00 260 514 44.00 210 359 80.00 260 514 44.50 210 359 81.00 265 519 45.00 210 359 82.00 265 519 45.50 215 364 83.00 265 519 46.00 215 364 84.00 265 519   diameter Flute length Total length Shank No. diameter Flute length Total length Shank No. 85.00 265 519 6  93.00  275  529   86.00 270 524  94.00  275 529    87.00 270 524  95.00  275  529   88.00 270 524  96.00  280 534    89.00 270 524 97.00   280  534   90.00 270 524  98.00 280   534   91.00 275 529  99.00  280  534   92.00 275 529  100.00 280   534

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