Hollow profile fastener BoxBolt® DIN EN ISO 898-1, hot-dip galvanised steel 8.8
BoxBolt steel hot dip galvanized hexagon head
HLSECTFSTNR-BOXBOLT-(8-42)-(HDG)-M20
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With general technical approval Z-14.4-482
Never exceed the permissible working loads. Before using hollow section fasteners, always check that the steel structure can withstand the required loads.
Angle bracket fastened to pipe post.
Connecting two hollow profiles mounted in each other.
Fastening with angle brackets and flange connections.
Fastening railing posts to hollow profile brackets.
With general technical approval Z-14.4-482
BoxBolt® is a registered trademark of Access Technologies Limited, GB.
Datasheets(X)
For fastening to hollow sections or other hard-to-reach components. The fastener is especially suitable for applications where the installation point is only accessible from one side.
The connection is produced by tightening the screw while bracing the sleeve collar, resulting in expansion of the sleeve. The tightening torques can be applied using a torque spanner. The hollow section fastener is only approved for one-time use!
We recommend the BoxSokTM special tool for installation.
 | |
Thread type x nominal diameter | M20 |
Screw length (l) | 100 mm |
Width across flats (S) | 30 mm |
Width across flats, sleeve (SHü) | 46 mm |
Sleeve diameter (dHÜ) | 32.5 mm |
Collar thickness (kHü) | 11 mm |
Sleeve length (lHü) | 78 mm |
Min./max. grip length (lk) | 8-42 mm |
Nominal drill hole diameter | 33 mm |
Tightening torque | 300 Nm |
Min. hole distance (A) | 70 mm |
Min. edge clearance (B) | 25 mm |
Material | Steel |
Surface | Hot dip galvanized |
RoHS-compliant | Yes |
| Nominal diameter | Maximum working load in kN1 | |
| Hot-dip galvanised steel | ||
| Permissible tensile load | Permissible shear load | |
| Ft,adm.1 | Fv,adm.1 | |
| M8 | 14,14 | 18,57 |
| M10 | 27,71 | 32,57 |
| M12 | 32,36 | 42,50 |
| M16 | 57,50 | 77,86 |
| M20 | 101,43 | 127,86 |
| 1Working loads Ft,adm. = Ft,R,d/γF or Fv,adm. = Fv,R,d/γF (partial safety factor of the effects γF = 1.4). In cases of the simultaneous occurrence of tensile and shear forces observe the information in DIN EN 1993-1-8, table 3.4. | ||
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