TinnerFlow
Tool

Tongue-and-groove / channel-lock pliers

Grips nuts, couplings, straps, and awkward hardware when the exact wrench is not available.

What it means

Handy for adjustment and holding, especially around supports and equipment accessories.

Check

  • Hanger hardware, collars, small threaded connections, equipment accessories, and general holding.

Warnings

  • Do not round off hardware, crush finished duct, or use pliers where torque/specific wrenching is required.