
unit: mm ref.Minor diameter ref.Minor diameter Recommended Recommended
thread of internal threads thread of internal threads
Size Class Hole Size(mm) Size Class Hole Size(mm)
engagement ratio (5H/6H) engagement ratio (5H/6H)
(Estimation %) (Estimation %)
| Max. | Min. | Max. | Min. | Max. | Min. | Min. Max. | ||||||
| ISO2X | 0.92 | 0.89 | 80~100 | ISO2X | 7.52 | 7.39 | 80~100 | |||||
| M1×0.25 | 0.785 | 0.729 | M8×1.25 | 6.647 6.912 | ||||||||
| ISO3X | 0.91 | 0.89 | 75~90 | ISO3X | 7.51 | 7.41 | 80~95 | |||||
| ISO2X | 1.11 | 1.09 | 80~100 | ISO2X | 7.60 | 7.49 | 80~100 | |||||
| M1.2×0.25 | 0.985 | 0.929 | M8×1 | 6.917 7.153 | ||||||||
| ISO3X | 1.11 | 1.09 | 75~90 | ISO3X | 7.60 | 7.52 | 80~95 | |||||
| ISO2X | 1.30 | 1.26 | 80~100 | ISO2X | 9.38 | 9.26 | 85~100 | |||||
| M1.4×0.3 | 1.142 | 1.075 | M10×1.5 | 8.376 8.676 | ||||||||
| ISO3X | 1.30 | 1.27 | 70~90 | ISO3X | 9.41 | 9.29 | 80~95 | |||||
| ISO2X | 1.47 | 1.43 | 75~100 | ISO2X | 9.52 | 9.38 | 80~100 | |||||
| M1.6×0.35 | 1.321 | 1.221 | M10×1.25 | 8.647 8.912 | ||||||||
| ISO3X | 1.48 | 1.44 | 70~95 | ISO3X | 9.50 | 9.40 | 80~95 | |||||
| ISO2X | 1.85 | 1.80 | 75~100 | ISO2X | 11.27 | 11.13 85~100 | ||||||
| M2×0.4 | 1.679 | 1.567 | M12×1.75 | 10.441 10.106 | ||||||||
| ISO3X | 1.87 | 1.81 | 70~95 | ISO3X | 11.26 | 11.17 | 85~95 | |||||
| ISO2X | 2.34 | 2.27 | 75~100 | ISO2X | 11.42 | 11.25 85~100 | ||||||
| M2.5×0.45 | 2.138 | 2.013 | M12×1.5 | 10.676 10.376 | ||||||||
| ISO3X | 2.34 | 2.29 | 75~95 | ISO3X | 11.40 | 11.28 | 80~95 | |||||
| ISO2X | 2.83 | 2.76 | 75~100 | ISO2X | 11.51 | 11.37 80~100 | ||||||
| M3×0.5 | 2.599 | 2.459 | M12×1.25 | 10.912 10.647 | ||||||||
| ISO3X | 2.82 | 2.76 | 75~95 | ISO3X | 11.50 | 11.40 | 80~95 | |||||
| ISO2X | 3.30 | 3.22 | 75~100 | ISO2X | 13.17 | 13.00 85~100 | ||||||
| M3.5×0.6 | 3.010 | 2.850 | M14×2 | 12.210 11.835 | ||||||||
| ISO3X | 3.28 | 3.22 | 75~95 | ISO3X | 13.15 | 13.05 | 85~95 | |||||
| ISO2X | 3.73 | 3.66 | 80~100 | ISO2X | 13.36 | 13.23 85~100 | ||||||
| M4×0.7 | 3.422 | 3.242 | M14×1.5 | 12.676 12.376 | ||||||||
| ISO3X | 3.74 | 3.67 | 75~95 | ISO3X | 13.40 | 13.28 | 80~95 | |||||
| ISO2X | 4.68 | 4.60 | 80~100 | ISO2X | 15.17 | 15.00 85~100 | ||||||
| M5×0.8 | 4.334 | 4.134 | M16×2 | 14.210 13.835 | ||||||||
| ISO3X | 4.71 | 4.62 | 75~95 | ISO3X | 15.15 | 15.04 | 85~95 | |||||
| ISO2X | 5.60 | 5.50 | 80~100 | ISO2X | 15.35 | 15.23 85~100 | ||||||
| M6×1 | 5.153 | 4.917 | M16×1.5 | 14.676 14.376 | ||||||||
| ISO3X | 5.61 | 5.53 | 80~95 | ISO3X | 15.40 | 15.27 | 80~95 |