Why Turn-of-Nut Wrenches?

Installing hex-head bolts has never been easier and using our turn of nut wrenches will drastically improve productivity –

  • No more guessing the rotation – the tool automatically tightens the bolt assembly to the preset rotation every time
  • Electric and light-weight– no compressor or heavy air hoses required
  • Less fatigue – the installation torque is absorbed by the tool’s reaction arm, not the worker
  • No jobsite calibration required – Unlike torque-based installation methods, the turn of nut method is unaffected by changes in bolt diameter and torque. This means a lot less Skidmore testing and a lot less confusion for the installers.
  • Compliant with International Standards – GWY’s TN-series wrenches are designed specifically for the “Turn of Nut” installation method found in most international standards, including AASHTO, AISC, RCSC, CSA & CISC

Our Product Line Includes:

  • TN Series Electric Wrenches
    • Bar sockets with reaction arm that stops automatically when preset angle is reached
    • Setting dial with controllable angle range between 90~240°
    • Reverse kit installation available for select models
    • ± 10% repeated accuracy
  • GPTN Series Electric Wrenches
    • Overload protection
    • Bar sockets with reaction arm that stops automatically when preset angle is reached
    • Setting dial with controllable angle range between 90~240°
    • Installed reverse kit
    • ± 10 repeated accuracy
  • TNC Series Minimal Clearance Electric Wrenches
    • Easy to use and allows fast limited clearance installation
    • Bar sockets with reaction arm that stops automatically when preset angle is reached

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Testimonials

Kind words from our customers:

  • From choosing the right equipment for each job’s unique requirements to problem solving in the field, GWY is always willing to go out of the way to find a solution. Mix that customer service in with their technical expertise and easy-to-use tools, they really help make bolt up easy.”

  • It was a great pleasure working with GWY. They go above and beyond to help with what we needed. Don was very quick on getting what we needed out to us to complete the job. Very proud to be a GWY customer.”

FAQs

Your questions, answered.

Because the TN-tool is rotation based, can it do smaller sizes than what it is recommended for?

No, because for the tool to start counting the degrees of rotation, a certain torque must be met.

Are the same size sockets interchangeable between different tools?

Typically, the answer is no but there are exceptions.  The only interchangeable sockets for current model shear wrenches are between the GV-301ZA and the GVC-301EZ. The Older models like the S-60EZA share sockets with their newer models like the S-61EZ. The same is true for the S-90EZ and GS-91EZ as well as the S-110EZ and the GS-111EZ.

There are a few TN tools that share sockets with each other such as the TN-20EZ and the TN-22EZ as well as the TN-30EZ and the TN-33EZ.

The GNR series can share sockets with some of the TN tools. The GNR-31E, 51E, & 81E can use the TN-20EZ/22EZ bar sockets instead of impact sockets. The GNR-121E can use the bar sockets of the TN-24EZA and the GNR-211E can use the bar sockets of the TN-30EZ/33EZ. The GNR’s can also share impact sockets that have their correct drive size.

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