Facts & Figures Book - KPI-JCI

ROCKWELL-BRINELL CONVERSION TABLE232Brinell Rockwell Brinell RockwellNumbers C Scale Numbers C Scale10 mm Ball Brale Penetrator 10 mm Ball Brale Penetrator3000 kg Load 150 kg Load 3000 kg Load 150 kg Load690 65 393 42673 64 382 41658 63 372 40645 62 362 39628 61 352 38614 60 342 37600 59 333 36587 58573 57 322 35560 56 313 34305 33547 55 296 32534 54 290 31522 53 283 30509 52 276 29496 51 272 28484 50 265 27472 49 260 26460 48448 47 255 25437 46 248 24245 23426 45 240 22415 44 235 21404 43 230 20AMERICAN STANDARD COARSEAND FINE THREAD SERIESThreads per inchThreads per inchCoarse Fine Coarse FineSize NC NF Size NC NF0 80 9⁄16 12 181 64 72 5⁄8 11 182 56 64 3⁄4 10 163 48 56 7⁄8 9 144 40 48 1 8 145 40 44 1 1 ⁄8 7 126 32 40 1 1 ⁄4 78 32 36 1 3 ⁄8 610 24 32 1 1 ⁄2 6 1212 24 28 1 3 ⁄4 51⁄4 20 28 2 4 1 ⁄25⁄16 18 24 2 1 ⁄4 4 1 ⁄23⁄8 16 24 2 1 ⁄2 47⁄16 14 20 2 3 ⁄4 41⁄2 13 20 3 4Over 3