d D B C d1 a e rs Cr Cor g min. rpm NAST 6ZZ 24.5 6 19 14 13.8 14 2.5 0.8 0.5 4.1 4.5 17000 NAST 8ZZ 39 8 24 14 13.8 17.5 2.5 0.8 1 5.7 5.9 14000 NAST 10ZZ 65 10 30 16 15.8 23.5 2.5 0.8 1.5 9.48 9.32 12000 NAST 12ZZ 75 12 32 16 15.8 25.5 2.5 0.8 1.5 10 10.4 11000 NAST 15ZZ 83 15 35 16 15.8 29 2.5 0.8 1.5 11.7 13.4 8500 NAST 17ZZ 136 17 40 20 19.8 32.5 3 1 1.5 19.2 23.5 7500 NAST 20ZZ 195 20 47 20