Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats (Short Thread Length - Product Grade C—Property Classes 8.8 and 10.9
ISO 7412 - 1984 C级高强度钢结构栓接用大六角头螺栓（大对边 短螺纹） 8.8和10.9级
See all versions and complete specifications: Hexagon Bolts for High-strength Structural Bolting with Large Width Across Flats (Short Thread Length) - Product Grade C - Property Classes 8.8 and 10.9 — Full Specification Page
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 18230.2 |
| ISO | ISO 7412 |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 2.0 | 10 | 29.56 | 0.4 | 18.7 |
| 31 |
| 38 |
| 15.30 |
| 24.9 |
| 0.8 |
| 16.70 |
| M16 | 2.5 | 14 | 39.55 | 0.4 | 25.24 | 38 | 45 | 21.16 | 33.3 | 0.8 | 22.84 |
| M20 | 3 | 17 | 50.85 | 0.4 | 31.24 | 44 | 51 | 26.16 | 42.8 | 0.8 | 27.84 |
| (M22) | 4 | 22.5 | 66.44 | 0.4 | 41 | 56 | 63 | 35.00 | 55.9 | 0.8 | 37.00 |
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