Description
Hollo-Bolt expansion bolts require access to only one side of the Structural Hollow Section (SHS), and offer a faster alternative to welding or through-bolting, enabling contractors to reduce construction time and labour costs. Installation is quickly carried out by inserting into pre-drilled steelwork and tightening with a torque wrench. Also suitable for blind connections where access is available from one side only.
The larger M16 and M20 Hollo-Bolts are optimised for high strength structural connections and feature a unique High Clamping Force (HCF) mechanism for superior performance.
- Fast, cost saving installation from one side.
- For square, rectangular and circular hollow sections.
- High resistance to shear and tension.
- Unique High Clamping Force design (size M16 & M20).
- Low temperature tested to -45°C (carbon steel variants).
- Other head types available.
- Independently tested for dynamic load applications to EN 1993-1-9.
| Collar | Safe Working Loads (5:1 Factor of Safety) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Product Code | Bolt Ø | Height | Length | Clamping Thickness | Outer Ply | Sleeve Outer Ø | Ø | Tightening Torque | Tensile | Single Shear | |
| Z | H | B (max) | W | min t | S | D | A/F | ||||
| mm | mm | mm | mm | mm | mm | mm | Nm | kN | kN | ||
| HB08-1 | M8 | 10.5 | 45 | 3 - 22 | - | 13.75 | 22 | 19 | 23 | 4.0 | 5.0 |
| HB08-2 | M8 | 10.5 | 65 | 22 - 41 | - | 13.75 | 22 | 19 | 23 | 4.0 | 5.0 |
| HB08-3 | M8 | 10.5 | 85 | 41 - 60 | - | 13.75 | 22 | 19 | 23 | 4.0 | 5.0 |
| HB10-1 | M10 | 12.5 | 49 | 3 - 22 | - | 17.75 | 29 | 24 | 45 | 8.5 | 10.0 |
| HB10-2 | M10 | 12.5 | 64 | 22 - 41 | - | 17.75 | 29 | 24 | 45 | 8.5 | 10.0 |
| HB10-3 | M10 | 12.5 | 84 | 41 - 60 | - | 17.75 | 29 | 24 | 45 | 8.5 | 10.0 |
| HB12-1 | M12 | 14.5 | 53 | 3 - 25 | - | 19.75 | 32 | 30 | 80 | 10.5 | 15.0 |
| HB12-2 | M12 | 14.5 | 73 | 25 - 47 | - | 19.75 | 32 | 30 | 80 | 10.5 | 15.0 |
| HB12-3 | M12 | 14.5 | 93 | 47 - 69 | - | 19.75 | 32 | 30 | 80 | 10.5 | 15.0 |
| High Clamping Force | |||||||||||
| HB16-1 | M16 | 18 | 67 | 12 - 29 | 8 | 25.75 | 38 | 36 | 190 | 21.0 | 30.0 |
| HB16-2 | M16 | 18 | 92 | 29 - 50 | 8 | 25.75 | 38 | 36 | 190 | 21.0 | 30.0 |
| HB16-3 | M16 | 18 | 112 | 50 - 71 | 8 | 25.75 | 38 | 36 | 190 | 21.0 | 30.0 |
| HB20-1 | M20 | 22.5 | 80 | 12 - 34 | 8 | 32.75 | 51 | 46 | 300 | 35.0 | 40.0 |
| HB20-2 | M20 | 22.5 | 110 | 34 - 60 | 8 | 32.75 | 51 | 46 | 300 | 35.0 | 40.0 |
| HB20-3 | M20 | 22.5 | 140 | 60 - 86 | 8 | 32.75 | 51 | 46 | 300 | 35.0 | 40.0 |
