DIN 478 – 2016 – Bu lông đầu vuông
Screw Thread | M5 | M6 | M8 | M10 | M12 | M16 | M16 | M20 | M20 | M24 | |
P | Pitch | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 3 |
b | L≤125 | 16 | 18 | 22 | 26 | 30 | 38 | 38 | 46 | 46 | 54 |
L>125 | / | / | / | 32 | 36 | 44 | 44 | 52 | 52 | 60 | |
h | max | 2.12 | 2.12 | 2.12 | 3.12 | 3.12 | 4.15 | 4.15 | 5.15 | 5.15 | 6.15 |
min | 1.88 | 1.88 | 1.88 | 2.88 | 2.88 | 3.85 | 3.85 | 4.85 | 4.85 | 5.85 | |
dc | max | 9.5 | 10.5 | 13.5 | 16.5 | 19.5 | 25 | 25 | 31 | 31 | 36 |
min | 8.92 | 9.8 | 12.8 | 15.8 | 18.66 | 24.16 | 24.16 | 30 | 30 | 35 | |
ds | max | 5 | 6 | 8 | 10 | 12 | 16 | 16 | 20 | 20 | 24 |
min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 15.73 | 15.73 | 19.67 | 19.67 | 23.67 | |
k | max | 7.18 | 8.18 | 10.18 | 13.22 | 15.22 | 20.26 | 20.26 | 25.26 | 25.26 | 28.26 |
min | 6.82 | 7.82 | 9.82 | 12.78 | 14.78 | 19.74 | 19.74 | 24.74 | 24.74 | 27.74 | |
s | max | 5 | 6 | 8 | 10 | 13 | 16 | 17 | 21 | 22 | 24 |
min | 4.82 | 5.82 | 7.78 | 9.78 | 12.73 | 15.73 | 16.73 | 20.67 | 21.67 | 23.67 | |
Weight of per 1000 steel products(≈kg) | – | – | – | – | – | – | – | – | – | – |