ANSI/ASME B 18.2.6M – 2012 – Bu lông kết cấu
Thread Size | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M36 | |
P | Pitch | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
ds | max | 12.70 | 16.70 | 20.84 | 22.84 | 24.84 | 27.84 | 30.84 | 37.00 |
min | 11.30 | 15.30 | 19.16 | 21.16 | 23.16 | 26.16 | 29.16 | 35.00 | |
s | max | 21.00 | 27.00 | 34.00 | 36.00 | 41.00 | 46.00 | 50.00 | 60.00 |
min | 20.16 | 26.16 | 33.00 | 35.00 | 40.00 | 45.00 | 49.00 | 58.80 | |
e | max | 24.25 | 31.18 | 39.26 | 41.57 | 47.34 | 53.12 | 57.74 | 69.28 |
min | 22.78 | 29.56 | 37.29 | 39.55 | 45.20 | 50.85 | 55.37 | 66.44 | |
k | max | 7.95 | 10.75 | 13.40 | 14.90 | 15.90 | 17.90 | 19.75 | 23.55 |
min | 7.05 | 9.25 | 11.60 | 13.10 | 14.10 | 16.10 | 17.65 | 21.45 | |
b | Ref. | 25.00 | 31.00 | 36.00 | 38.00 | 41.00 | 44.00 | 49.00 | 56.00 |
Length of Thread b | – | – | – | – | – | – | – | – |