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BoxBolt™ is an expansion anchor that can be used to make connections to structural sections.
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 steework.
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 BoxBolt?
Technical Data
BoxBolt Data Sheet
BoxSok Features

The BoxBolt consists of three parts: A core bolt, a sleeve (shoulder and body) that will expand, and a modified nut (wedge) that will leverage the sleeve into the expansion. During installation, the bolt must turn, but the sleeve has to stay stationary. This allows for the nut to tighten down and the sleeve to expand.
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- Simplicity
- Simple connections to structural metal sections
- Safety
- Guaranteed Safe Working Loads
- 5:1 Factor of Safety
- Savings
- Selection
- Hot Dip Galvanized for corrosion protection
- Available in zinc plate finish
- Available in stainless steel
- Large combined material clamping range
- Special lengths available
- Click Here to Browse BoxBolt Inventory
Fast Installation
To tighten down a BoxBolt, an installer must typically use 2 wrenches to install one bolt - one to hold the outer sleeve stationary, and one to turn the inner bolt.
A Faster Way with BoxSok
The BoxSok adds simplicity to the installation process. Attached to a regular socket wrench (air powered makes this a snap), it takes the place of both wrenches. The BoxSok has an outer piece that will hold the sleeve of the BoxBolt stationary, while an inner piece turns the bolt. This makes what would have been a 4 minute job (per bolt) into a 30 second job.
A "good" reason to buy an "expensive" socket
- Let’s say that the average installer costs $30.00 per hour to have on site (this usually is a very low estimate)
- With 2 wrenches, this installer will take approximately 4 min. per bolt to perform the installation, whereas it will take 30 seconds with the BoxSok.
- Let’s also say that you are installing 1000 bolts
- If you are saving 3 ½ minutes per bolt, this is equal to over 58 hours of labor.
- Going back to the original amount that our installer is being paid, this equals $1,740.00 in savings.
Other BoxSok benefits consist of:
- Less fatigue on the installer
- You won’t hold up other aspects of a job while waiting for the bolts to be installed
- You will be able to get off of the jobsite faster
Watch BoxBolt and BoxSok in Action
BoxBolt being tightened down with a BoxSok. This kind of tightening could easily be done with a simple socket wrench.
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