NF E 25-114 – 2001 – Bu lông lục giác
Screw Thread | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | |||
P | Pitch | 0.35 | 0.40 | 0.45 | 0.50 | 0.70 | 0.80 | 1.00 | 1.25 | 1.50 | 1.75 | ||
k | Grade A | max | 1.225 | 1.525 | 1.825 | 2.125 | 2.925 | 3.65 | 4.15 | 5.45 | 6.58 | 7.68 | |
min | 0.975 | 1.275 | 1.575 | 1.875 | 2.675 | 3.35 | 3.85 | 5.15 | 6.22 | 7.32 | |||
Grade B | max | 1.3 | 1.6 | 1.9 | 2.2 | 3 | 3.74 | 4.24 | 5.54 | 6.69 | 7.79 | ||
min | 0.9 | 1.2 | 1.5 | 1.8 | 2.6 | 3.26 | 3.76 | 5.06 | 6.11 | 7.21 | |||
s | Grade A | max | 3.2 | 4 | 5 | 5.5 | 7 | 8 | 10 | 13 | 16 | 18 | |
min | 3.02 | 3.82 | 4.82 | 5.32 | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | |||
Grade B | max | 3.2 | 4 | 5 | 5.5 | 7 | 8 | 10 | 13 | 16 | 18 | ||
min | 2.9 | 3.7 | 4.7 | 5.2 | 6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 |
Screw Thread | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | |||
P | Pitch | 2.0 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | ||
k | Grade A | max | 10.18 | 12.715 | 15.215 | / | / | / | / | / | / | |
min | 9.82 | 12.285 | 14.785 | / | / | / | / | / | / | |||
Grade B | max | 10.29 | 12.85 | 15.35 | 19.12 | 22.92 | 26.42 | 30.42 | 35.5 | 40.5 | ||
min | 9.71 | 12.15 | 14.65 | 18.28 | 22.08 | 25.58 | 29.58 | 34.5 | 39.5 | |||
s | Grade A | max | 24 | 30 | 36 | / | / | / | / | / | / | |
min | 23.67 | 29.67 | 35.38 | / | / | / | / | / | / | |||
Grade B | max | 24 | 30 | 36 | 46 | 55 | 65 | 75 | 85 | 95 | ||
min | 23.16 | 29.16 | 35 | 45 | 53.8 | 63.1 | 73.1 | 82.8 | 92.8 |