Aluminum Structural Framing Connections

Below is a PDF chart on how to select connection elements. It indicates what is connection element is suitable for certain applications.

Bosch Rexroth: Selection Criteria for Connection Elements

Nuts and Bolts

Sliding-block-2

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  • T-nut/collar screw or Flange nut/T-bolt
    • Used in combination for attaching something directly to a slot
  • Sliding blocks
    • Used to replace a T-nut if a stronger connection is needed
  • Straddling nut
    • Used to replace a T-nut if a very light load is used.

Brackets

Tensioning-Connector

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  • Tensioning connector
    • Used to attach 2 profiles at a 90degree angle. Very quick assembly.
  • Inner bracket
    • Used to attach 2 profiles at a 90degree angle. Fully concealable.
  • Miter bracket
    • Used to attach 2 profiles at a 90degree angle. Will work if profile ends are miter cut.
  • Heavy duty connector
    • Used to attach 2 profiles at a 90degree angle. Useful for very high load applications.
  • Bracket
    • Used to attach 2 profiles at a 90degree angle. The most simple and cost effective option but is not concealable.
  • Angle piece R
    • Used to attach 2 profiles at any angle.

End to End Connections

Profile-Connector

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  • Profile connector
    • Used to attach 2 profiles at their faces. Fits between the slots of the profiles as a bridge. Using 2 of these in opposing slots is the preferred usage.
  • End connector
    • Used to attach 2 profiles at their faces. This is a 2 piece connection that first connects to the ends of the profiles with a central bolt then to each other with 4 screws which can be accessed by the slots. 

Central Bolt Connections

Central-Bolt

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  • Central bolt
    • Used to attach something to the central hole in a profile. Self tapping so finishing is not required. Lowest cost but least versatile connection. Drilling holes in profiles may be required depending on the application.
  • Anti-Torsion element
    • Added opposite of a central bolt connection to increase torsion resistance.
  • Cubic connector
    • Used to attach 2 or 3 profiles at their ends at 90degree angles. 
  • Corner bracket
    • Has the same application as the cubic connector but with a rounded aesthetic.

 

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