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Hollo-Bolt Countersunk Head is an expansion bolt that only requires access from one side of the Structural Hollow Section (SHS).
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 'Countersunk Head' version also ensures that the fixing protrusion from the steelwork is kept to a minimum whilst still using a plain drilled hole in the supporting section and the outer plate / bracket.
Size M16 features a High Clamping Force (HCF) mechanism to produce three times more clamping force than the same sized product without the mechanism.
Features & Benefits
Durability and corrosion protection:
|Corrosivity Class||Electroplated Steel||Sheraplex||Stainless Steel|
|C1||More than 50 years||More than 50 years||More than 50 years|
|C2||More than 20 years||More than 50 years||More than 50 years|
|C3||More than 10 years||More than 20 years||More than 50 years|
For C4 and C5 corrosion categories contact us.
|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|
|HBCSK08-1||M8||5||45||3 - 22||-||13.75||22||19||23||4.0||5.0|
|HBCSK08-2||M8||5||65||22 - 41||-||13.75||22||19||23||4.0||5.0|
|HBCSK08-3||M8||5||85||41 - 60||-||13.75||22||19||23||4.0||5.0|
|HBCSK10-1||M10||6||44||3 - 22||-||17.75||29||24||45||8.5||10.0|
|HBCSK10-2||M10||6||64||22 - 41||-||17.75||29||24||45||8.5||10.0|
|HBCSK10-3||M10||6||84||41 - 60||-||17.75||29||24||45||8.5||10.0|
|HBCSK12-1||M12||7||48||3 - 25||-||19.75||32||30||80||10.5||15.0|
|HBCSK12-2||M12||7||73||25 - 47||-||19.75||32||30||80||10.5||15.0|
|HBCSK12-3||M12||7||93||47 - 69||-||19.75||32||30||80||10.5||15.0|
|High Clamping Force|
|HBCSK16-1||M16||8||62||12 - 29||8||25.75||38||36||190||21.0||30.0|
|HBCSK16-2||M16||8||92||29 - 50||8||25.75||38||36||190||21.0||30.0|
|HBCSK16-3||M16||8||112||50 - 71||8||25.75||38||36||190||21.0||30.0|
For Characteristic Resistances when designing a connection to Eurocode 3, please refer to DoP No.001
• Hollo-Bolts can be used on a wide variety of steel hollow shape sections. Safe working loads shown are based on use in S275 structural hollow section and are applicable to the Hollo-Bolt only in both tension and shear. Failure of the section, particularly on those with thin walls and a wide chord face, could occur at a lower figure and its strength should be checked by a qualified Structural Engineer.
Faster to Install
No drilling or welding!
Reasons to choose Lindapter
Save time and money
Clamping two steel sections together avoids time-consuming welding or conventional drilling and bolting.
On-site drilling and welding is avoided, removing the need for hot work permits and encouraging safer site conditions.
Lindapter clamps are manufactured from high strength materials to resist high load requirements and harsh environments.
Industry leading approvals
Lindapter has earned a reputation synonymous with safety and reliability, gaining multiple independent approvals.
Quickly align steel sections by sliding the section into the correct position before tightening the Girder Clamp to complete the installation.
Free connection design
Lindapter’s experienced Engineers can design a bespoke connection based on your specific requirements free of charge.