Here is some useful information relating to High Strength Friction Grip Bolts.
Table 1.1
Approximate Masses of Ordinary Bolts, Nuts and Washers
| Mass per 100 bolts excluding nuts (kg) | |||||
|
Nominal Length (mm) |
M12 | M16 | M20 | M24 | M30 |
| 30 | 4.0 | ||||
| 35 | 4.6 | ||||
| 40 | 5.0 | 9.5 | 15.9 | ||
| 45 | 5.4 | 10.4 | 17.6 | ||
| 50 | 5.9 | 11.1 | 18.5 | 27.6 | 49.2* |
| 55 | 6.4 | 11.5 | 19.7 | 29.7 | 51.9* |
| 60 | 6.8 | 12.7 | 21.0 | 31.5 | 54.7 |
| 65 | 7.1 | 13.4 | 22.3 | 33.4 | 57.4 |
| 70 | 7.6 | 13.7 | 23.4 | 35.2 | 60.2* |
| 80 | 8.5 | 15.9 | 25.8 | 38.7 | 65.7 |
| 90 | 9.4 | 17.4 | 28.2 | 41.5 | 71.2 |
| 100 | 10.0 | 18.8 | 30.6 | 45.1 | 76.7 |
| 110 | 11.1 | 20.5 | 33.1 | 48.6 | 82.3 |
| 120 | 12.0 | 22.3 | 35.6 | 52.3 | 88.0 |
| 130 | 12.7 | 23.8 | 38.0 | 55.8 | 88.0 |
| 140 | 13.6 | 25.4 | 40.6 | 59.3 | 97.5 |
| 150 | 14.5 | 26.9 | 43.1 | 63.0 | 103 |
| 160 | 15.3 | 27.8 | 44.7 | 66.5 | 109 |
| 180 | 17.1 | 31.0 | 49.5 | 73.5 | 120 |
| 200 | 34.2 | 54.5 | 80.5 | 131 | |
| Mass per 100 nuts (kg) | |||||
| DIN 934 | 1.51 | 3.00 | 5.90 | 10.1 | 20.9 |
| ISO 4032 | 1.59 | 3.42 | 6.67 | 11.4 | 22.3 |
| Mass per 100 round flat washers (kg) | |||||
| DIN 126 | 0.59 | 1.06 | 1.64 | 3.11 | 5.05 |
Table 1.2
Basic Dimensions of HSFG Bolts
| s | k | ds | e | ||||
| d | Min | Max | Min | Nom | Max | Min | Min |
| M16 | 26.2 | 27.0 | 9.25 | 10.0 | 16.7 | 15.3 | 29.56 |
| M20 | 33.0 | 34.0 | 11.60 | 13.0 | 20.0 | 19.67 | 37.29 |
| M24 | 40.0 | 41.0 | 14.10 | 15.0 | 24.0 | 23.67 | 45.20 |
| M30 | 49.0 | 50.0 | 17.65 | 19.0 | 30.8 | 29.16 | 55.37 |
Table 1.3
Basic Dimensions of Nuts for HSFG Bolts 
| p | s | e | m | |||
| d | pitch | Max | Min | Min | Max | Min |
| M16 | 2.0 | 27.0 | 26.2 | 29.56 | 17.1 | 19.4 |
| M20 | 2.5 | 34.0 | 33.0 | 37.29 | 20.7 | 19.4 |
| M24 | 3.0 | 41.0 | 40.0 | 45.20 | 24.2 | 22.9 |
| M30 | 3.5 | 50.0 | 49.0 | 55.37 | 30.7 | 29.5 |
Table 1.4
Basic Dimensions of Washers for HSFG Bolts
| d1 | d2 | c | ||||
| d | Max | Min | Max | Min | Max | Min |
| M16 | 17.43 | 17 | 33 | 31.4 | 1.6 | 1.2 |
| M20 | 21.52 | 21 | 40 | 38.4 | 2.0 | 1.6 |
| M24 | 25.52 | 25 | 47 | 45.4 | 2.0 | 1.6 |
| M30 | 31.62 | 31 | 56 | 54.1 | 2.4 | 2.0 |
