9. Comparison of pitch diameter tolerance Intro For Cutting Tap Metric Coarse Thread (M) Basic Pitch (+) μm SP Dia. 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 4H 112 M10 × 1.5 P2 P3 P5 5H 140 SL M11 × 1.5 ISO1 ISO2 ISO3 6H 180 32 ISO2X 6G 212 4H 125 PO P2 P4 P5 5H 160 M12 × 1.75 ISO1 ISO2 ISO3 6H 200 34 ISO2X 6G 234 4H 132 ST M14 × 2 P2 P4 P5 P6 5H 170 M16 × 2 ISO1 ISO2 ISO3 6H 212 38 ISO2X 6G 250 ROLL 4H 140 M18 × 2.5 P2 P4 P5 P6 5H 180 M20 × 2.5 M22 × 2.5 ISO1 ISO2 ISO3 6H 224 42 ISO2X 6G 266 CARBIDE 4H 170 P3 P5 P6 P7 5H 212 M24 × 3 ISO1 ISO2 ISO3 6H 265 48 ISO2X 6G 313 LONG 4H 170 P3 P5 P7 5H 212 M27 × 3 ISO1 ISO2 ISO3 6H 265 HAND 48 ISO2X 6G 313 TAPS P7 4H 180 M30 × 3.5 P3 P6 P8 5H 224 M33 × 3.5 ISO1 ISO2 ISO3 6H 280 EG (STI) 53 ISO2X 6G 333 P7 4H 190M36 × 4P3P6P85H236M39 × 4ISO1ISO2ISO36H300 SPECIALTHREADS,GAUGES 60 ISO2X 6G 360 P7 4H 200 THREAD M42 × 4.5 P3 P6 P8 5H 250M45 × 4.5ISO1ISO2ISO36H315 MILLS 63 ISO2X 6G 378 P8 4H 212 DIES P4 P6 P9 5H 265 M48 × 5 ISO1 ISO2 ISO3 6H 335 71 ISO2X 6G 406 CENTER DRILLS Technical info 647