9. Comparison of pitch diameter tolerance Intro For Forming Tap Metric Fine Thread (MF) 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 JIS 2 G5 G6 90 MF3 × 0.35 6H ISO2X 90 SL 19 6G ISO3X 109 JIS 2 G5 G6 100 MF4 × 0.5 6H ISO2X 100 MF5 × 0.5 20 6G ISO3X 120 ISO2X (6HX) Class G for JIS 2 Internal threads PO ISO3X (6GX) JIS 2 G5 G6 G7 100 Internal threads 6H JIS 2 Class Internal threads MF6 × 0.5 6H ISO2X 112 Internal threads 6G 20 6G ISO3X 132 ST JIS 2 G5 G6 G7 G8 100 MF6 × 0.75 6H ISO2X 132 22 6G ISO3X 154 ROLL JIS 2 G6 G7 G8 120 MF8 × 0.75 6H ISO2X 132 22 6G ISO3X 154 CARBIDE JIS 2 G7 G8 G10 120 MF8 x 1 6H ISO2X 150 MF9 x 1 26 6G ISO3X 176 LONG JIS 2 G7 G8 G10 130 MF10 x 1 6H ISO2X 150 MF11 x 1 26 6G ISO3X 176 HAND MF10 x 1.25 JIS 2 G7 G9 G10 130 TAPS 6H ISO2X 160 MF11 x 1.25 28 6G ISO3X 188 MF12 x 1 JIS 2 G8 G10 140 EG (STI) MF14 x 1 6H ISO2X 160 MF16 x 1 26 6G ISO3X 186 JIS 2 G9 G10 G11 180 SPECIAL MF12 x 1.25 6H ISO2X 180 THREADS, MF14 x 1.25 28 6G ISO3X 208 GAUGES MF12 x 1.5 JIS 2 G8 G10 G12 150 MF14 x 1.5 6H ISO2X 190 THREAD MF15 x 1.5 MF16 x 1.5 32 6G ISO3X 222 MILLS DIES CENTER DRILLS Technical info 659