9. Comparison of pitch diameter tolerance Intro For Cutting Tap Metric Fine Thread (MF) SP Basic Pitch (+) μm Dia. 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 4H 132 SL MF48 × 1.5 P2 P4 P5 P6 5H 170 ISO1 ISO2 ISO3 6H 212 32 ISO2X 6G 244 PO P6 4H 150 P3 P5 P7 5H 190 MF48 × 2 ISO1 ISO2 ISO3 6H 236 38 ISO2X 6G 274 ST 4H 180 P3 P5 P7 5H 224 MF48 × 3 ISO1 ISO2 ISO3 6H 280 48 ISO2X 6G 328 ROLL P7 4H 200 P3 P6 P8 5H 250 MF48 × 4 ISO1 ISO2 ISO3 6H 315 63 ISO2X 6G 378 CARBIDE LONG ISO1 (4H-5H) ISO2X (6HX) ISO2 (6H) ISO3 (6G) HAND, Internal threads 4H Internal threads 6H TAPS Internal threads 5H Internal threads 6G EG (STI) SPECIAL THREADS, GAUGES THREAD MILLS DIES CENTER DRILLS Technical info 650