EN 14399-8 Hexagon Bolt for HV Connections in Steel Structures
EN 14399-8 hexagon fit bolt for HV connections in steel structures. Property class 10.9 steel, coated and uncoated. Thread M12–M36, length up to 200 mm.
The EN 14399-8 hexagon bolt for HV connections in steel structures is known as a fit bolt: it is designed for precise, clearance-free installation in holes. Its characteristic feature is an enlarged diameter of the plain shank section compared to the threaded section. This ensures alignment of the connected elements working in shear, without additional measures.
EN 14399-8 bolts are made of high-strength property class 10.9 steel, uncoated as well as with a hot-dip galvanized coating. Metric thread M12–M36, length up to 200 mm.
| d | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
|---|---|---|---|---|---|---|---|---|
| k | 8 | 10 | 13 | 14 | 15 | 17 | 19 | 23 |
| ds | 13 | 17 | 21 | 23 | 25 | 28 | 31 | 37 |
| b | 23 | 28 | 33 | 34 | 39 | 41 | 44 | 52 |
| s | 22 | 27 | 32 | 36 | 41 | 46 | 50 | 60 |
Designations:
d - nominal thread diameter
k - hexagon head height
ds - bolt shank diameter
b - thread length
s - width across flats
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