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Box Bolt - Expansion Blind Bolt for Structural Steel Tube

of Box Boltâ„¢ & BeamClamp Products
BoxBolt™ is an expansion anchor that can be used to make connections to structural sections.

BoxBolt™ is an expansion anchor that can be used to make connections to structural sections when access is restricted to one side.

The BoxBolt™ is suitable for use with rectangular, square and circular sections, or other types of metalwork where access is restricted to one side only. Ideal for use on hollow steel work.

The shoulder of the BoxBolt™ is hexagonal. This allows it to be held in position with an open ended wrench while a torque wrench is used to tighten the core bolt. As the core bolt is tightened the threaded wedge is drawn up inside the body, the fins expand, and a secure connection is made. To reduce installation time, a one piece accessory called the BoxSok™ can be used to attach to most air and power tools.

Why Choose Box Bolt?


Simple connections to structural metal sections


  • Guaranteed Safe Working Loads
  • 5:1 Factor of Safety


  • ICC Certified (see below)
  • Lloyds Register (LR) Approved
  • Deutsches Institut fur Bautechnik (DIBt) Approved


Installation with our BoxSok can save you hundreds of dollars in installation costs.


  • Hot Dip Galvanized for corrosion protection
  • Available in zinc plate finish
  • Available in stainless steel
  • Large combined material clamping range
  • Special lengths available
  • Multiple Head Types
  • Click Here to Browse BoxBolt Inventory

ICC Certified - ESR-3217

ICC BoxBolt Brochure

The Kee Safety BoxBolt is the first blind fastener to achieve ICC testing and approval! The ESR-3217 approval document has been published on the ICC web site. Click on the document to the right for a complete listing of testing criteria and load ratings. More information about the ICC BoxBolt is available here.

Click here to order the ICC approved blind fasteners

Box Bolt Application Examples

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Video Overview of Box Bolt

Get a sense for how Box Bolt works in context by taking a look at this video