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Top & Bottom Locking Collar

Top & Bottom Locking Collar Hydraulic Nut

Hydraulic tensioning with hydraulic tensioners and nuts is the ideal method for tightening bolted connections. Hydraulic tensioning eliminates inaccuracies and helps achieve correct bolt loading in critical fasteners. At HTI, we’ve been building hydraulic tensioners and nuts since 1986. 

HTI hydraulic nuts come standard with a top locking collar. A top collar is useful when a nut is sunk into a pocket or spot face [link to spot face definition on terminology page] and the bottom of the nut is inaccessible. 

Depending on space constraints, a bottom locking collar is possible and may be preferable. 

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Custom Engineered Solutions Since 1986

HTI has been designing engineered solutions to your toughest bolt tensioning problems for over 35 years! Choose from one of HTI’s hydraulic nut catalog models or we can design a custom hydraulic nut for any application when a standard model won’t work. HTI hydraulic nuts can be designed for imperial or metric-sized studs. Contact us to start the process of getting the right tensioning solution for your application.

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If you have questions, comments, would like more information about our products, or want to get started designing your custom tensioning solution, please contact us and we will respond promptly.