21. Thread Series Intro Metric Threads SP Nominal Dia. Pitch Column Column Column122 Coarse Fine 1 0.25 0.2 1.1 0.25 0.2 1.2 0.25 2.2 SL 1.41.6 0.30.35 0.20.2 1.8 0.35 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 PO 4 4.5 0.70.75 0.50.5 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 ST 10 1.5111.5 1.25 1 0.7510.75 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 2.52.5 2 1.5 121.51 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 CARBIDE 30 3.532 3 2 1.5 121.5 33 3.5 3 2 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 LONG 42 45 4.54.5 4 3 2 1.54321.5 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 HAND 5860 5,5 4 3 2 1.54321.5 TAPS 64 62 6 4 3 2 1.54321.5 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 1.52 80 6 4 3 2 1.5 82 2 85 6 4 3 2 90 6 4 3 2 SPECIALTHREADS,100 95105 6 4 3 264326432 GAUGES 110 115 6 4 3 26432 120 6 4 3 2 125 8 6 4 3 2 130 8 6 4 3 2 THREAD 140 135 6 4 3 286432 MILLS 145150 6 4 3 286432 DIES CENTER DRILLS Technical info 708