21. Thread Series Intro Metric Threads SP Nominal Dia. Pitch Column Column Column Coarse Fine 1 2 2 1 0.25 0.2 1.1 0.25 0.2 1.2 0.25 2.2 1.4 0.3 0.2 SL 1.6 1.8 0.35 0.35 0.2 0.2 2 0.4 0.25 2.2 0.45 0.25 2.5 0.45 0.35 3 0.5 0.35 3.5 0.6 0.35 4 0.7 0.5 PO 4.5 0.75 0.5 5 0.8 0.5 5.5 0.5 6 1 0.75 7 1 0.75 8 1.25 1 0.75 9 1.25 1 0.75 10 1.5 1.25 1 0.75 ST 11 1.5 1 0.75 12 1.75 1.5 1.25 1 14 2 1.5 1.25 1 15 1.5 1 16 2 1.5 1 17 1.5 1 18 2.5 2 1.5 1 ROLL 20 22 2.5 2.5 2 2 1.5 1.5 1 1 24 3 2 1.5 1 25 2 1.5 1 26 1.5 27 3 2 1.5 1 28 2 1.5 1 30 3.5 3 2 1.5 1 CARBIDE 33 32 3.5 3 2 2 1.5 1.5 35 1.5 36 4 3 2 1.5 38 1.5 39 4 3 2 1.5 40 3 2 1.5 42 4.5 4 3 2 1.5 LONG 45 4.5 4 3 2 1.5 48 5 4 3 2 1.5 50 3 2 1.5 52 5 4 3 2 1.5 55 4 3 2 1.5 56 5.5 4 3 2 1.5 58 4 3 2 1.5 HAND 60 5,5 4 3 2 1.5 TAPS 64 62 6 4 4 3 3 2 2 1.5 1.5 65 4 3 2 1.5 68 6 4 3 2 1.5 70 6 4 3 2 1.5 72 6 4 3 2 1.5 75 4 3 2 1.5 EG (STI) 76 78 6 4 3 2 2 1.5 80 6 4 3 2 1.5 82 2 85 6 4 3 2 90 6 4 3 2 SPECIAL 100 95 6 6 4 4 3 3 2 2 THREADS, 105 6 4 3 2 110 6 4 3 2 GAUGES 115 6 4 3 2 120 6 4 3 2 125 8 6 4 3 2 130 8 6 4 3 2 135 6 4 3 2 THREAD 140 8 6 4 3 2 145 6 4 3 2 MILLS 150 8 6 4 3 2 DIES CENTER DRILLS Technical info 708