Box Bolt - Technical Data, Installation, and Applications

Dimensional and loading information, installation instructions, and application examples.

Technical Data Sheets

Download the following data sheets for dimensional and load information

Full Box Bolt Catalog (info starts on page 21)

Installation Instructions

Clamping Range

The clamping range of the BoxBolt connector is the combined thickness of the steel being connected and the steelwork being connected to. Each diameter of the BoxBolt connector has three overlapping lengths designed to accommodate a wide range of material thicknesses. If your clamping range exceeds those stated above, special lengths are available.

Hole Dimensions & Positioning

It is important that the correct hole size is drilled to accommodate the body of the BoxBolt connector. Dimensions are shown in the table below. If a BoxBolt connector is being used close to the edge of a section or in close proximity to another BoxBolt connector, a minimum spacing is required to ensure that the wings are free to expand correctly.

Installation Diagram

Box Bolt Installation

Step 1	Step 2	Step 3
Align the hole in the bracket to be secured with the pre-drilled hole in the structural tube. Insert the BoxBolt connector through both pieces of steel until the underside of the shoulder is flush with the outside of the steel.	Hold the hexagon shoulder of the BoxBolt connector with an open ended wrench. Use a torque wrench to tighten the core bolt.	Remove the open ended wrench and check to ensure that the core bolt is tightened to the recommended torque.

Application Examples

BoxBolt connectors are used here to secure a bracket to structural tube.
Structural tube to structural tube sections being connected with an angle bracket.
Structural tube with drilled end plate being connected to vertical structural tube.
Replacing the Core Bolt The core bolt down the center of the BoxBolt connector can be replaced with threaded rod, eyebolts or other threaded items.
Structural Tube Sleeve Connection By inserting one structural tube inside another, a sleeve connection can be easily made using the BoxBolt connector.
Angle to Tubular Post The BoxBolt connector is suitable for most profiles of structural tube, including circular sections.
Structural Tube to Wide Flange Beam The BoxBolt connector can be used with other BeamClamp products to connect structural tube sections to existing steel without the need for site drilling and welding.
Securing Glazing Bracket The BoxBolt connector can be used to secure glazing panel brackets to building structures with access only required from one side.
Handrails to Structural Tube The BoxBolt connector can be used to connect any bracket, such as the mounting plate of handrails to structures, with access only required from one side.